// Licensed to the Apache Software Foundation (ASF) under one
// or more contributor license agreements.  See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership.  The ASF licenses this file
// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
// with the License.  You may obtain a copy of the License at
//
//   http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing,
// software distributed under the License is distributed on an
// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied.  See the License for the
// specific language governing permissions and limitations
// under the License.
package com.cloud.storage.dao;

import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import java.util.Map;

import javax.inject.Inject;
import javax.naming.ConfigurationException;

import org.apache.cloudstack.storage.datastore.db.TemplateDataStoreDao;
import org.apache.cloudstack.storage.datastore.db.TemplateDataStoreVO;
import org.apache.log4j.Logger;
import org.springframework.stereotype.Component;

import com.cloud.dc.dao.DataCenterDao;
import com.cloud.domain.dao.DomainDao;
import com.cloud.host.Host;
import com.cloud.host.HostVO;
import com.cloud.host.dao.HostDao;
import com.cloud.hypervisor.Hypervisor.HypervisorType;
import com.cloud.server.ResourceTag.ResourceObjectType;
import com.cloud.storage.Storage;
import com.cloud.storage.Storage.ImageFormat;
import com.cloud.storage.Storage.TemplateType;
import com.cloud.storage.VMTemplateDetailVO;
import com.cloud.storage.VMTemplateStorageResourceAssoc;
import com.cloud.storage.VMTemplateVO;
import com.cloud.storage.VMTemplateZoneVO;
import com.cloud.tags.ResourceTagVO;
import com.cloud.tags.dao.ResourceTagDao;
import com.cloud.template.VirtualMachineTemplate;
import com.cloud.utils.db.DB;
import com.cloud.utils.db.Filter;
import com.cloud.utils.db.GenericDaoBase;
import com.cloud.utils.db.GenericSearchBuilder;
import com.cloud.utils.db.JoinBuilder;
import com.cloud.utils.db.SearchBuilder;
import com.cloud.utils.db.SearchCriteria;
import com.cloud.utils.db.SearchCriteria.Func;
import com.cloud.utils.db.TransactionLegacy;
import com.cloud.utils.db.UpdateBuilder;
import com.cloud.utils.exception.CloudRuntimeException;

@Component
public class VMTemplateDaoImpl extends GenericDaoBase<VMTemplateVO, Long> implements VMTemplateDao {
    private static final Logger s_logger = Logger.getLogger(VMTemplateDaoImpl.class);

    @Inject
    VMTemplateZoneDao _templateZoneDao;
    @Inject
    VMTemplateDetailsDao _templateDetailsDao;

    @Inject
    HostDao _hostDao;
    @Inject
    DomainDao _domainDao;
    @Inject
    DataCenterDao _dcDao;
    @Inject
    TemplateDataStoreDao _templateDataStoreDao;

    private static final String SELECT_S3_CANDIDATE_TEMPLATES = "SELECT t.id, t.unique_name, t.name, t.public, t.featured, "
        + "t.type, t.hvm, t.bits, t.url, t.format, t.created, t.account_id, t.checksum, t.display_text, "
        + "t.enable_password, t.guest_os_id, t.bootable, t.prepopulate, t.cross_zones, t.hypervisor_type "
        + "FROM vm_template t JOIN template_host_ref r ON t.id=r.template_id JOIN host h ON h.id=r.host_id "
        + "WHERE t.hypervisor_type IN (SELECT hypervisor_type FROM host) AND r.download_state = 'DOWNLOADED' AND "
        + "r.template_id NOT IN (SELECT template_id FROM template_s3_ref) AND r.destroyed = 0 AND t.type <> 'PERHOST'";

    protected SearchBuilder<VMTemplateVO> TemplateNameSearch;
    protected SearchBuilder<VMTemplateVO> UniqueNameSearch;
    protected SearchBuilder<VMTemplateVO> tmpltTypeSearch;
    protected SearchBuilder<VMTemplateVO> tmpltTypeHyperSearch;
    protected SearchBuilder<VMTemplateVO> readySystemTemplateSearch;
    protected SearchBuilder<VMTemplateVO> tmpltTypeHyperSearch2;

    protected SearchBuilder<VMTemplateVO> AccountIdSearch;
    protected SearchBuilder<VMTemplateVO> NameSearch;
    protected SearchBuilder<VMTemplateVO> ValidNameSearch;
    protected SearchBuilder<VMTemplateVO> TmpltsInZoneSearch;
    protected SearchBuilder<VMTemplateVO> ActiveTmpltSearch;
    private SearchBuilder<VMTemplateVO> PublicSearch;
    private SearchBuilder<VMTemplateVO> NameAccountIdSearch;
    private SearchBuilder<VMTemplateVO> PublicIsoSearch;
    private SearchBuilder<VMTemplateVO> UserIsoSearch;
    private GenericSearchBuilder<VMTemplateVO, Long> CountTemplatesByAccount;
    // private SearchBuilder<VMTemplateVO> updateStateSearch;
    private SearchBuilder<VMTemplateVO> AllFieldsSearch;
    protected SearchBuilder<VMTemplateVO> ParentTemplateIdSearch;

    @Inject
    ResourceTagDao _tagsDao;

    private String routerTmpltName;
    private String consoleProxyTmpltName;

    public VMTemplateDaoImpl() {
    }

    @Override
    public List<VMTemplateVO> listByPublic() {
        SearchCriteria<VMTemplateVO> sc = PublicSearch.create();
        sc.setParameters("public", 1);
        return listBy(sc);
    }

    @Override
    public VMTemplateVO findByName(String templateName) {
        SearchCriteria<VMTemplateVO> sc = UniqueNameSearch.create();
        sc.setParameters("uniqueName", templateName);
        return findOneIncludingRemovedBy(sc);
    }

    @Override
    public VMTemplateVO findByTemplateName(String templateName) {
        SearchCriteria<VMTemplateVO> sc = NameSearch.create();
        sc.setParameters("name", templateName);
        return findOneIncludingRemovedBy(sc);
    }

    @Override
    public VMTemplateVO findValidByTemplateName(String templateName) {
        SearchCriteria<VMTemplateVO> sc = ValidNameSearch.create();
        sc.setParameters("name", templateName);
        sc.setParameters("state", VirtualMachineTemplate.State.Active);
        return findOneBy(sc);
    }

    @Override
    public List<VMTemplateVO> listByParentTemplatetId(long parentTemplatetId) {
        SearchCriteria<VMTemplateVO> sc = ParentTemplateIdSearch.create();
        sc.setParameters("parentTemplateId", parentTemplatetId);
        sc.setParameters("state", VirtualMachineTemplate.State.Active);
        return listBy(sc);
    }

    @Override
    public List<VMTemplateVO> publicIsoSearch(Boolean bootable, boolean listRemoved, Map<String, String> tags) {

        SearchBuilder<VMTemplateVO> sb = null;
        if (tags == null || tags.isEmpty()) {
            sb = PublicIsoSearch;
        } else {
            sb = createSearchBuilder();
            sb.and("public", sb.entity().isPublicTemplate(), SearchCriteria.Op.EQ);
            sb.and("format", sb.entity().getFormat(), SearchCriteria.Op.EQ);
            sb.and("type", sb.entity().getTemplateType(), SearchCriteria.Op.EQ);
            sb.and("bootable", sb.entity().isBootable(), SearchCriteria.Op.EQ);
            sb.and("state", sb.entity().getState(), SearchCriteria.Op.EQ);

            SearchBuilder<ResourceTagVO> tagSearch = _tagsDao.createSearchBuilder();
            for (int count = 0; count < tags.size(); count++) {
                tagSearch.or().op("key" + String.valueOf(count), tagSearch.entity().getKey(), SearchCriteria.Op.EQ);
                tagSearch.and("value" + String.valueOf(count), tagSearch.entity().getValue(), SearchCriteria.Op.EQ);
                tagSearch.cp();
            }
            tagSearch.and("resourceType", tagSearch.entity().getResourceType(), SearchCriteria.Op.EQ);
            sb.groupBy(sb.entity().getId());
            sb.join("tagSearch", tagSearch, sb.entity().getId(), tagSearch.entity().getResourceId(), JoinBuilder.JoinType.INNER);
        }

        SearchCriteria<VMTemplateVO> sc = sb.create();

        sc.setParameters("public", 1);
        sc.setParameters("format", "ISO");
        sc.setParameters("type", TemplateType.PERHOST.toString());
        if (bootable != null) {
            sc.setParameters("bootable", bootable);
        }

        if (!listRemoved) {
            sc.setParameters("state", VirtualMachineTemplate.State.Active);
        }

        if (tags != null && !tags.isEmpty()) {
            int count = 0;
            sc.setJoinParameters("tagSearch", "resourceType", ResourceObjectType.ISO.toString());
            for (String key : tags.keySet()) {
                sc.setJoinParameters("tagSearch", "key" + String.valueOf(count), key);
                sc.setJoinParameters("tagSearch", "value" + String.valueOf(count), tags.get(key));
                count++;
            }
        }

        return listBy(sc);
    }

    @Override
    public List<VMTemplateVO> userIsoSearch(boolean listRemoved) {

        SearchBuilder<VMTemplateVO> sb = null;
        sb = UserIsoSearch;
        SearchCriteria<VMTemplateVO> sc = sb.create();

        sc.setParameters("format", Storage.ImageFormat.ISO);
        sc.setParameters("type", TemplateType.USER.toString());

        if (!listRemoved) {
            sc.setParameters("state", VirtualMachineTemplate.State.Active);
        }

        return listBy(sc);
    }

    @Override
    public List<VMTemplateVO> listAllSystemVMTemplates() {
        SearchCriteria<VMTemplateVO> sc = tmpltTypeSearch.create();
        sc.setParameters("templateType", Storage.TemplateType.SYSTEM);

        Filter filter = new Filter(VMTemplateVO.class, "id", false, null, null);
        return listBy(sc, filter);
    }

    @Override
    public List<Long> listPrivateTemplatesByHost(Long hostId) {

        String sql =
            "select * from template_host_ref as thr INNER JOIN vm_template as t ON t.id=thr.template_id "
                + "where thr.host_id=? and t.public=0 and t.featured=0 and t.type='USER' and t.state='Active'";

        List<Long> l = new ArrayList<Long>();

        TransactionLegacy txn = TransactionLegacy.currentTxn();

        PreparedStatement pstmt = null;
        try {
            pstmt = txn.prepareAutoCloseStatement(sql);
            pstmt.setLong(1, hostId);
            ResultSet rs = pstmt.executeQuery();
            while (rs.next()) {
                l.add(rs.getLong(1));
            }
        } catch (SQLException e) {
            s_logger.debug("Exception: ", e);
        }
        return l;
    }

    @Override
    public List<VMTemplateVO> listReadyTemplates() {
        SearchCriteria<VMTemplateVO> sc = createSearchCriteria();
        sc.addAnd("ready", SearchCriteria.Op.EQ, true);
        sc.addAnd("format", SearchCriteria.Op.NEQ, Storage.ImageFormat.ISO);
        return listIncludingRemovedBy(sc);
    }

    @Override
    public List<VMTemplateVO> findIsosByIdAndPath(Long domainId, Long accountId, String path) {
        SearchCriteria<VMTemplateVO> sc = createSearchCriteria();
        sc.addAnd("iso", SearchCriteria.Op.EQ, true);
        if (domainId != null) {
            sc.addAnd("domainId", SearchCriteria.Op.EQ, domainId);
        }
        if (accountId != null) {
            sc.addAnd("accountId", SearchCriteria.Op.EQ, accountId);
        }
        if (path != null) {
            sc.addAnd("path", SearchCriteria.Op.EQ, path);
        }
        return listIncludingRemovedBy(sc);
    }

    @Override
    public List<VMTemplateVO> listByAccountId(long accountId) {
        SearchCriteria<VMTemplateVO> sc = AccountIdSearch.create();
        sc.setParameters("accountId", accountId);
        sc.setParameters("state", VirtualMachineTemplate.State.Active);
        return listBy(sc);
    }

    @Override
    public List<VMTemplateVO> listByHypervisorType(List<HypervisorType> hyperTypes) {
        SearchCriteria<VMTemplateVO> sc = createSearchCriteria();
        hyperTypes.add(HypervisorType.None);
        sc.addAnd("hypervisorType", SearchCriteria.Op.IN, hyperTypes.toArray());
        return listBy(sc);
    }

    @Override
    public boolean configure(String name, Map<String, Object> params) throws ConfigurationException {
        boolean result = super.configure(name, params);

        PublicSearch = createSearchBuilder();
        PublicSearch.and("public", PublicSearch.entity().isPublicTemplate(), SearchCriteria.Op.EQ);

        routerTmpltName = (String)params.get("routing.uniquename");

        s_logger.debug("Found parameter routing unique name " + routerTmpltName);
        if (routerTmpltName == null) {
            routerTmpltName = "routing";
        }

        consoleProxyTmpltName = (String)params.get("consoleproxy.uniquename");
        if (consoleProxyTmpltName == null) {
            consoleProxyTmpltName = "routing";
        }
        if (s_logger.isDebugEnabled()) {
            s_logger.debug("Use console proxy template : " + consoleProxyTmpltName);
        }

        UniqueNameSearch = createSearchBuilder();
        UniqueNameSearch.and("uniqueName", UniqueNameSearch.entity().getUniqueName(), SearchCriteria.Op.EQ);
        NameSearch = createSearchBuilder();
        NameSearch.and("name", NameSearch.entity().getName(), SearchCriteria.Op.EQ);
        ValidNameSearch = createSearchBuilder();
        ValidNameSearch.and("name", ValidNameSearch.entity().getName(), SearchCriteria.Op.EQ);
        ValidNameSearch.and("state", ValidNameSearch.entity().getState(), SearchCriteria.Op.EQ);
        ValidNameSearch.and("removed", ValidNameSearch.entity().getRemoved(), SearchCriteria.Op.NULL);

        NameAccountIdSearch = createSearchBuilder();
        NameAccountIdSearch.and("name", NameAccountIdSearch.entity().getName(), SearchCriteria.Op.EQ);
        NameAccountIdSearch.and("accountId", NameAccountIdSearch.entity().getAccountId(), SearchCriteria.Op.EQ);

        PublicIsoSearch = createSearchBuilder();
        PublicIsoSearch.and("public", PublicIsoSearch.entity().isPublicTemplate(), SearchCriteria.Op.EQ);
        PublicIsoSearch.and("format", PublicIsoSearch.entity().getFormat(), SearchCriteria.Op.EQ);
        PublicIsoSearch.and("type", PublicIsoSearch.entity().getTemplateType(), SearchCriteria.Op.EQ);
        PublicIsoSearch.and("bootable", PublicIsoSearch.entity().isBootable(), SearchCriteria.Op.EQ);
        PublicIsoSearch.and("state", PublicIsoSearch.entity().getState(), SearchCriteria.Op.EQ);

        UserIsoSearch = createSearchBuilder();
        UserIsoSearch.and("format", UserIsoSearch.entity().getFormat(), SearchCriteria.Op.EQ);
        UserIsoSearch.and("type", UserIsoSearch.entity().getTemplateType(), SearchCriteria.Op.EQ);
        UserIsoSearch.and("state", UserIsoSearch.entity().getState(), SearchCriteria.Op.EQ);

        tmpltTypeHyperSearch = createSearchBuilder();
        tmpltTypeHyperSearch.and("templateType", tmpltTypeHyperSearch.entity().getTemplateType(), SearchCriteria.Op.EQ);
        SearchBuilder<HostVO> hostHyperSearch = _hostDao.createSearchBuilder();
        hostHyperSearch.and("type", hostHyperSearch.entity().getType(), SearchCriteria.Op.EQ);
        hostHyperSearch.and("zoneId", hostHyperSearch.entity().getDataCenterId(), SearchCriteria.Op.EQ);
        hostHyperSearch.groupBy(hostHyperSearch.entity().getHypervisorType());

        tmpltTypeHyperSearch.join("tmplHyper", hostHyperSearch, hostHyperSearch.entity().getHypervisorType(), tmpltTypeHyperSearch.entity().getHypervisorType(),
            JoinBuilder.JoinType.INNER);
        hostHyperSearch.done();
        tmpltTypeHyperSearch.done();

        readySystemTemplateSearch = createSearchBuilder();
        readySystemTemplateSearch.and("state", readySystemTemplateSearch.entity().getState(), SearchCriteria.Op.EQ);
        readySystemTemplateSearch.and("templateType", readySystemTemplateSearch.entity().getTemplateType(), SearchCriteria.Op.EQ);
        SearchBuilder<TemplateDataStoreVO> templateDownloadSearch = _templateDataStoreDao.createSearchBuilder();
        templateDownloadSearch.and("downloadState", templateDownloadSearch.entity().getDownloadState(), SearchCriteria.Op.IN);
        readySystemTemplateSearch.join("vmTemplateJoinTemplateStoreRef", templateDownloadSearch, templateDownloadSearch.entity().getTemplateId(),
            readySystemTemplateSearch.entity().getId(), JoinBuilder.JoinType.INNER);
        SearchBuilder<HostVO> hostHyperSearch2 = _hostDao.createSearchBuilder();
        hostHyperSearch2.and("type", hostHyperSearch2.entity().getType(), SearchCriteria.Op.EQ);
        hostHyperSearch2.and("zoneId", hostHyperSearch2.entity().getDataCenterId(), SearchCriteria.Op.EQ);
        hostHyperSearch2.and("removed", hostHyperSearch2.entity().getRemoved(), SearchCriteria.Op.NULL);
        hostHyperSearch2.groupBy(hostHyperSearch2.entity().getHypervisorType());

        readySystemTemplateSearch.join("tmplHyper", hostHyperSearch2, hostHyperSearch2.entity().getHypervisorType(), readySystemTemplateSearch.entity()
            .getHypervisorType(), JoinBuilder.JoinType.INNER);
        hostHyperSearch2.done();
        readySystemTemplateSearch.done();

        tmpltTypeHyperSearch2 = createSearchBuilder();
        tmpltTypeHyperSearch2.and("templateType", tmpltTypeHyperSearch2.entity().getTemplateType(), SearchCriteria.Op.EQ);
        tmpltTypeHyperSearch2.and("hypervisorType", tmpltTypeHyperSearch2.entity().getHypervisorType(), SearchCriteria.Op.EQ);
        tmpltTypeHyperSearch2.and("templateName", tmpltTypeHyperSearch2.entity().getName(), SearchCriteria.Op.EQ);

        tmpltTypeSearch = createSearchBuilder();
        tmpltTypeSearch.and("state", tmpltTypeSearch.entity().getState(), SearchCriteria.Op.EQ);
        tmpltTypeSearch.and("templateType", tmpltTypeSearch.entity().getTemplateType(), SearchCriteria.Op.EQ);

        AccountIdSearch = createSearchBuilder();
        AccountIdSearch.and("accountId", AccountIdSearch.entity().getAccountId(), SearchCriteria.Op.EQ);
        AccountIdSearch.and("publicTemplate", AccountIdSearch.entity().isPublicTemplate(), SearchCriteria.Op.EQ);
        AccountIdSearch.and("state", AccountIdSearch.entity().getState(), SearchCriteria.Op.EQ); // only list not removed templates for this account
        AccountIdSearch.done();

        SearchBuilder<VMTemplateZoneVO> tmpltZoneSearch = _templateZoneDao.createSearchBuilder();
        tmpltZoneSearch.and("removed", tmpltZoneSearch.entity().getRemoved(), SearchCriteria.Op.NULL);
        tmpltZoneSearch.and("zoneId", tmpltZoneSearch.entity().getZoneId(), SearchCriteria.Op.EQ);

        TmpltsInZoneSearch = createSearchBuilder();
        TmpltsInZoneSearch.and("state", TmpltsInZoneSearch.entity().getState(), SearchCriteria.Op.IN);
        TmpltsInZoneSearch.and().op("avoidtype", TmpltsInZoneSearch.entity().getTemplateType(), SearchCriteria.Op.NEQ);
        TmpltsInZoneSearch.or("templateType", TmpltsInZoneSearch.entity().getTemplateType(), SearchCriteria.Op.NULL);
        TmpltsInZoneSearch.cp();
        TmpltsInZoneSearch.join("tmpltzone", tmpltZoneSearch, tmpltZoneSearch.entity().getTemplateId(), TmpltsInZoneSearch.entity().getId(), JoinBuilder.JoinType.INNER);
        tmpltZoneSearch.done();
        TmpltsInZoneSearch.done();

        ActiveTmpltSearch = createSearchBuilder();
        ActiveTmpltSearch.and("state", ActiveTmpltSearch.entity().getState(), SearchCriteria.Op.IN);

        CountTemplatesByAccount = createSearchBuilder(Long.class);
        CountTemplatesByAccount.select(null, Func.COUNT, null);
        CountTemplatesByAccount.and("account", CountTemplatesByAccount.entity().getAccountId(), SearchCriteria.Op.EQ);
        CountTemplatesByAccount.and("state", CountTemplatesByAccount.entity().getState(), SearchCriteria.Op.EQ);
        CountTemplatesByAccount.done();

        //        updateStateSearch = this.createSearchBuilder();
        //        updateStateSearch.and("id", updateStateSearch.entity().getId(), Op.EQ);
        //        updateStateSearch.and("state", updateStateSearch.entity().getState(), Op.EQ);
        //        updateStateSearch.and("updatedCount", updateStateSearch.entity().getUpdatedCount(), Op.EQ);
        //        updateStateSearch.done();

        AllFieldsSearch = createSearchBuilder();
        AllFieldsSearch.and("state", AllFieldsSearch.entity().getState(), SearchCriteria.Op.EQ);
        AllFieldsSearch.and("accountId", AllFieldsSearch.entity().getAccountId(), SearchCriteria.Op.EQ);
        AllFieldsSearch.and("id", AllFieldsSearch.entity().getId(), SearchCriteria.Op.EQ);
        AllFieldsSearch.and("destroyed", AllFieldsSearch.entity().getState(), SearchCriteria.Op.EQ);
        AllFieldsSearch.and("notDestroyed", AllFieldsSearch.entity().getState(), SearchCriteria.Op.NEQ);
        AllFieldsSearch.and("updatedCount", AllFieldsSearch.entity().getUpdatedCount(), SearchCriteria.Op.EQ);
        AllFieldsSearch.and("name", AllFieldsSearch.entity().getName(), SearchCriteria.Op.EQ);
        AllFieldsSearch.done();

        ParentTemplateIdSearch = createSearchBuilder();
        ParentTemplateIdSearch.and("parentTemplateId", ParentTemplateIdSearch.entity().getParentTemplateId(), SearchCriteria.Op.EQ);
        ParentTemplateIdSearch.and("state", ParentTemplateIdSearch.entity().getState(), SearchCriteria.Op.EQ);
        ParentTemplateIdSearch.done();

        return result;
    }

    @Override
    public String getRoutingTemplateUniqueName() {
        return routerTmpltName;
    }

    @Override
    public void loadDetails(VMTemplateVO tmpl) {
        Map<String, String> details = _templateDetailsDao.listDetailsKeyPairs(tmpl.getId());
        tmpl.setDetails(details);
    }

    @Override
    public void saveDetails(VMTemplateVO tmpl) {
        Map<String, String> detailsStr = tmpl.getDetails();
        if (detailsStr == null) {
            return;
        }
        List<VMTemplateDetailVO> details = new ArrayList<VMTemplateDetailVO>();
        for (String key : detailsStr.keySet()) {
            VMTemplateDetailVO detail = new VMTemplateDetailVO(tmpl.getId(), key, detailsStr.get(key), true);
            details.add(detail);
        }

        _templateDetailsDao.saveDetails(details);
    }

    /*
     * @Override public Set<Pair<Long, Long>> searchSwiftTemplates(String name,
     * String keyword, TemplateFilter templateFilter, boolean isIso,
     * List<HypervisorType> hypers, Boolean bootable, DomainVO domain, Long
     * pageSize, Long startIndex, Long zoneId, HypervisorType hyperType, boolean
     * onlyReady, boolean showDomr, List<Account> permittedAccounts, Account
     * caller, Map<String, String> tags) {
     *
     * StringBuilder builder = new StringBuilder(); if
     * (!permittedAccounts.isEmpty()) { for (Account permittedAccount :
     * permittedAccounts) { builder.append(permittedAccount.getAccountId() +
     * ","); } }
     *
     * String permittedAccountsStr = builder.toString();
     *
     * if (permittedAccountsStr.length() > 0) { // chop the "," off
     * permittedAccountsStr = permittedAccountsStr.substring(0,
     * permittedAccountsStr.length() - 1); }
     *
     * TransactionLegacy txn = TransactionLegacy.currentTxn(); txn.start();
     *
     * Set<Pair<Long, Long>> templateZonePairList = new HashSet<Pair<Long,
     * Long>>(); PreparedStatement pstmt = null; ResultSet rs = null; String sql
     * = SELECT_TEMPLATE_SWIFT_REF; try { String joinClause = ""; String
     * whereClause = " WHERE t.removed IS NULL";
     *
     * if (isIso) { whereClause += " AND t.format = 'ISO'"; if
     * (!hyperType.equals(HypervisorType.None)) { joinClause =
     * " INNER JOIN guest_os guestOS on (guestOS.id = t.guest_os_id) INNER JOIN guest_os_hypervisor goh on ( goh.guest_os_id = guestOS.id) "
     * ; whereClause += " AND goh.hypervisor_type = '" + hyperType.toString() +
     * "'"; } } else { whereClause += " AND t.format <> 'ISO'"; if
     * (hypers.isEmpty()) { return templateZonePairList; } else { StringBuilder
     * relatedHypers = new StringBuilder(); for (HypervisorType hyper : hypers)
     * { relatedHypers.append("'"); relatedHypers.append(hyper.toString());
     * relatedHypers.append("'"); relatedHypers.append(","); }
     * relatedHypers.setLength(relatedHypers.length() - 1); whereClause +=
     * " AND t.hypervisor_type IN (" + relatedHypers + ")"; } } joinClause +=
     * " INNER JOIN  template_swift_ref tsr on (t.id = tsr.template_id)"; if
     * (keyword != null) { whereClause += " AND t.name LIKE \"%" + keyword +
     * "%\""; } else if (name != null) { whereClause += " AND t.name LIKE \"%" +
     * name + "%\""; }
     *
     * if (bootable != null) { whereClause += " AND t.bootable = " + bootable; }
     *
     * if (!showDomr) { whereClause += " AND t.type != '" +
     * Storage.TemplateType.SYSTEM.toString() + "'"; }
     *
     * if (templateFilter == TemplateFilter.featured) { whereClause +=
     * " AND t.public = 1 AND t.featured = 1"; } else if ((templateFilter ==
     * TemplateFilter.self || templateFilter == TemplateFilter.selfexecutable)
     * && caller.getType() != Account.ACCOUNT_TYPE_ADMIN) { if (caller.getType()
     * == Account.ACCOUNT_TYPE_DOMAIN_ADMIN || caller.getType() ==
     * Account.ACCOUNT_TYPE_RESOURCE_DOMAIN_ADMIN) { joinClause +=
     * " INNER JOIN account a on (t.account_id = a.id) INNER JOIN domain d on (a.domain_id = d.id)"
     * ; whereClause += "  AND d.path LIKE '" + domain.getPath() + "%'"; } else
     * { whereClause += " AND t.account_id IN (" + permittedAccountsStr + ")"; }
     * } else if ((templateFilter == TemplateFilter.shared || templateFilter ==
     * TemplateFilter.sharedexecutable) && caller.getType() !=
     * Account.ACCOUNT_TYPE_ADMIN) { if (caller.getType() ==
     * Account.ACCOUNT_TYPE_NORMAL) { joinClause +=
     * " LEFT JOIN launch_permission lp ON t.id = lp.template_id WHERE" +
     * " (t.account_id IN (" + permittedAccountsStr + ") OR" +
     * " lp.account_id IN (" + permittedAccountsStr + "))"; } else { joinClause
     * += " INNER JOIN account a on (t.account_id = a.id) "; } } else if
     * (templateFilter == TemplateFilter.executable &&
     * !permittedAccounts.isEmpty()) { whereClause +=
     * " AND (t.public = 1 OR t.account_id IN (" + permittedAccountsStr + "))";
     * } else if (templateFilter == TemplateFilter.community) { whereClause +=
     * " AND t.public = 1 AND t.featured = 0"; } else if (templateFilter ==
     * TemplateFilter.all && caller.getType() == Account.ACCOUNT_TYPE_ADMIN) { }
     * else if (caller.getType() != Account.ACCOUNT_TYPE_ADMIN) { return
     * templateZonePairList; }
     *
     * sql += joinClause + whereClause + getOrderByLimit(pageSize, startIndex);
     * pstmt = txn.prepareStatement(sql); rs = pstmt.executeQuery(); while
     * (rs.next()) { Pair<Long, Long> templateZonePair = new Pair<Long,
     * Long>(rs.getLong(1), -1L); templateZonePairList.add(templateZonePair); }
     *
     * } catch (Exception e) { s_logger.warn("Error listing templates", e); }
     * finally { try { if (rs != null) { rs.close(); } if (pstmt != null) {
     * pstmt.close(); } txn.commit(); } catch (SQLException sqle) {
     * s_logger.warn("Error in cleaning up", sqle); } }
     *
     * return templateZonePairList; }
     *
     *
     * @Override public Set<Pair<Long, Long>> searchTemplates(String name,
     * String keyword, TemplateFilter templateFilter, boolean isIso,
     * List<HypervisorType> hypers, Boolean bootable, DomainVO domain, Long
     * pageSize, Long startIndex, Long zoneId, HypervisorType hyperType, boolean
     * onlyReady, boolean showDomr,List<Account> permittedAccounts, Account
     * caller, ListProjectResourcesCriteria listProjectResourcesCriteria,
     * Map<String, String> tags, String zoneType) { StringBuilder builder = new
     * StringBuilder(); if (!permittedAccounts.isEmpty()) { for (Account
     * permittedAccount : permittedAccounts) {
     * builder.append(permittedAccount.getAccountId() + ","); } }
     *
     * String permittedAccountsStr = builder.toString();
     *
     * if (permittedAccountsStr.length() > 0) { //chop the "," off
     * permittedAccountsStr = permittedAccountsStr.substring(0,
     * permittedAccountsStr.length()-1); }
     *
     * TransactionLegacy txn = TransactionLegacy.currentTxn(); txn.start();
     *
     * // Use LinkedHashSet here to guarantee iteration order Set<Pair<Long,
     * Long>> templateZonePairList = new LinkedHashSet<Pair<Long, Long>>();
     * PreparedStatement pstmt = null; ResultSet rs = null; StringBuilder
     * relatedDomainIds = new StringBuilder(); String sql =
     * SELECT_TEMPLATE_ZONE_REF; String groupByClause = ""; try { //short
     * accountType; //String accountId = null; String guestOSJoin = "";
     * StringBuilder templateHostRefJoin = new StringBuilder(); String
     * dataCenterJoin = "", lpjoin = ""; String tagsJoin = "";
     *
     * if (isIso && !hyperType.equals(HypervisorType.None)) { guestOSJoin =
     * " INNER JOIN guest_os guestOS on (guestOS.id = t.guest_os_id) INNER JOIN guest_os_hypervisor goh on ( goh.guest_os_id = guestOS.id) "
     * ; } if (onlyReady){ templateHostRefJoin.append(
     * " INNER JOIN  template_host_ref thr on (t.id = thr.template_id) INNER JOIN host h on (thr.host_id = h.id)"
     * ); sql = SELECT_TEMPLATE_HOST_REF; groupByClause =
     * " GROUP BY t.id, h.data_center_id "; } if ((templateFilter ==
     * TemplateFilter.featured) || (templateFilter == TemplateFilter.community))
     * { dataCenterJoin =
     * " INNER JOIN data_center dc on (h.data_center_id = dc.id)"; }
     *
     * if (zoneType != null) { dataCenterJoin =
     * " INNER JOIN template_host_ref thr on (t.id = thr.template_id) INNER JOIN host h on (thr.host_id = h.id)"
     * ; dataCenterJoin +=
     * " INNER JOIN data_center dc on (h.data_center_id = dc.id)"; }
     *
     * if (templateFilter == TemplateFilter.sharedexecutable || templateFilter
     * == TemplateFilter.shared ){ lpjoin =
     * " INNER JOIN launch_permission lp ON t.id = lp.template_id "; }
     *
     * if (tags != null && !tags.isEmpty()) { tagsJoin =
     * " INNER JOIN resource_tags r ON t.id = r.resource_id "; }
     *
     * sql += guestOSJoin + templateHostRefJoin + dataCenterJoin + lpjoin +
     * tagsJoin; String whereClause = "";
     *
     * //All joins have to be made before we start setting the condition
     * settings if ((listProjectResourcesCriteria ==
     * ListProjectResourcesCriteria.SkipProjectResources ||
     * (!permittedAccounts.isEmpty() && !(templateFilter ==
     * TemplateFilter.community || templateFilter == TemplateFilter.featured)))
     * && !(caller.getType() != Account.ACCOUNT_TYPE_NORMAL && templateFilter ==
     * TemplateFilter.all)) { whereClause +=
     * " INNER JOIN account a on (t.account_id = a.id)"; if ((templateFilter ==
     * TemplateFilter.self || templateFilter == TemplateFilter.selfexecutable)
     * && (caller.getType() == Account.ACCOUNT_TYPE_DOMAIN_ADMIN ||
     * caller.getType() == Account.ACCOUNT_TYPE_RESOURCE_DOMAIN_ADMIN)) {
     * whereClause +=
     * " INNER JOIN domain d on (a.domain_id = d.id) WHERE d.path LIKE '" +
     * domain.getPath() + "%'"; if (listProjectResourcesCriteria ==
     * ListProjectResourcesCriteria.SkipProjectResources) { whereClause +=
     * " AND a.type != " + Account.ACCOUNT_TYPE_PROJECT; } } else if
     * (listProjectResourcesCriteria ==
     * ListProjectResourcesCriteria.SkipProjectResources) { whereClause +=
     * " WHERE a.type != " + Account.ACCOUNT_TYPE_PROJECT; } }
     *
     * if (!permittedAccounts.isEmpty()) { for (Account account :
     * permittedAccounts) { //accountType = account.getType(); //accountId =
     * Long.toString(account.getId()); DomainVO accountDomain =
     * _domainDao.findById(account.getDomainId());
     *
     * // get all parent domain ID's all the way till root domain DomainVO
     * domainTreeNode = accountDomain; while (true) {
     * relatedDomainIds.append(domainTreeNode.getId());
     * relatedDomainIds.append(","); if (domainTreeNode.getParent() != null) {
     * domainTreeNode = _domainDao.findById(domainTreeNode.getParent()); } else
     * { break; } }
     *
     * // get all child domain ID's if (isAdmin(account.getType()) ) {
     * List<DomainVO> allChildDomains =
     * _domainDao.findAllChildren(accountDomain.getPath(),
     * accountDomain.getId()); for (DomainVO childDomain : allChildDomains) {
     * relatedDomainIds.append(childDomain.getId());
     * relatedDomainIds.append(","); } }
     * relatedDomainIds.setLength(relatedDomainIds.length()-1); } }
     *
     * String attr = " AND "; if (whereClause.endsWith(" WHERE ")) { attr +=
     * " WHERE "; }
     *
     * if (!isIso) { if ( hypers.isEmpty() ) { return templateZonePairList; }
     * else { StringBuilder relatedHypers = new StringBuilder(); for
     * (HypervisorType hyper : hypers ) { relatedHypers.append("'");
     * relatedHypers.append(hyper.toString()); relatedHypers.append("'");
     * relatedHypers.append(","); }
     * relatedHypers.setLength(relatedHypers.length()-1); whereClause += attr +
     * " t.hypervisor_type IN (" + relatedHypers + ")"; } }
     *
     * if (!permittedAccounts.isEmpty() && !(templateFilter ==
     * TemplateFilter.featured || templateFilter == TemplateFilter.community ||
     * templateFilter == TemplateFilter.executable || templateFilter ==
     * TemplateFilter.shared || templateFilter ==
     * TemplateFilter.sharedexecutable) && !isAdmin(caller.getType()) ) {
     * whereClause += attr + "t.account_id IN (" + permittedAccountsStr + ")"; }
     *
     * if (templateFilter == TemplateFilter.featured) { whereClause += attr +
     * "t.public = 1 AND t.featured = 1"; if (!permittedAccounts.isEmpty()) {
     * whereClause += attr + "(dc.domain_id IN (" + relatedDomainIds +
     * ") OR dc.domain_id is NULL)"; } } else if (templateFilter ==
     * TemplateFilter.self || templateFilter == TemplateFilter.selfexecutable) {
     * whereClause += " AND t.account_id IN (" + permittedAccountsStr + ")"; }
     * else if (templateFilter == TemplateFilter.sharedexecutable ||
     * templateFilter == TemplateFilter.shared ) { whereClause += " AND " +
     * " (t.account_id IN (" + permittedAccountsStr + ") OR" +
     * " lp.account_id IN (" + permittedAccountsStr + "))"; } else if
     * (templateFilter == TemplateFilter.executable &&
     * !permittedAccounts.isEmpty()) { whereClause += attr +
     * "(t.public = 1 OR t.account_id IN (" + permittedAccountsStr + "))"; }
     * else if (templateFilter == TemplateFilter.community) { whereClause +=
     * attr + "t.public = 1 AND t.featured = 0"; if
     * (!permittedAccounts.isEmpty()) { whereClause += attr +
     * "(dc.domain_id IN (" + relatedDomainIds + ") OR dc.domain_id is NULL)"; }
     * } else if (caller.getType() != Account.ACCOUNT_TYPE_ADMIN && !isIso) {
     * return templateZonePairList; }
     *
     * if (tags != null && !tags.isEmpty()) { whereClause += " AND ("; boolean
     * first = true; for (String key : tags.keySet()) { if (!first) {
     * whereClause += " OR "; } whereClause += "(r.key=\"" + key +
     * "\" and r.value=\"" + tags.get(key) + "\")"; first = false; } whereClause
     * += ")"; }
     *
     * if (whereClause.equals("")) { whereClause += " WHERE "; } else if
     * (!whereClause.equals(" WHERE ")) { whereClause += " AND "; }
     *
     * sql += whereClause + getExtrasWhere(templateFilter, name, keyword, isIso,
     * bootable, hyperType, zoneId, onlyReady, showDomr, zoneType) +
     * groupByClause + getOrderByLimit(pageSize, startIndex);
     *
     * pstmt = txn.prepareStatement(sql); rs = pstmt.executeQuery();
     *
     * while (rs.next()) { Pair<Long, Long> templateZonePair = new Pair<Long,
     * Long>(rs.getLong(1), rs.getLong(2));
     * templateZonePairList.add(templateZonePair); } //for now, defaulting
     * pageSize to a large val if null; may need to revisit post 2.2RC2 if(isIso
     * && templateZonePairList.size() < (pageSize != null ? pageSize : 500) &&
     * templateFilter != TemplateFilter.community && !(templateFilter ==
     * TemplateFilter.self && !BaseCmd.isRootAdmin(caller.getType())) ){
     * //evaluates to true If root admin and filter=self
     *
     * List<VMTemplateVO> publicIsos = publicIsoSearch(bootable, false, tags);
     * List<VMTemplateVO> userIsos = userIsoSearch(false);
     *
     * //Listing the ISOs according to the page size.Restricting the total no.
     * of ISOs on a page //to be less than or equal to the pageSize parameter
     *
     * int i=0;
     *
     * if (startIndex > userIsos.size()) { i=(int) (startIndex -
     * userIsos.size()); }
     *
     * for (; i < publicIsos.size(); i++) { if(templateZonePairList.size() >=
     * pageSize){ break; } else { if (keyword != null &&
     * publicIsos.get(i).getName().contains(keyword)) {
     * templateZonePairList.add(new Pair<Long,Long>(publicIsos.get(i).getId(),
     * null)); continue; } else if (name != null &&
     * publicIsos.get(i).getName().contains(name)) {
     * templateZonePairList.add(new Pair<Long,Long>(publicIsos.get(i).getId(),
     * null)); continue; } else if (keyword == null && name == null){
     * templateZonePairList.add(new Pair<Long,Long>(publicIsos.get(i).getId(),
     * null)); } } } } } catch (Exception e) {
     * s_logger.warn("Error listing templates", e); } finally { try { if (rs !=
     * null) { rs.close(); } if (pstmt != null) { pstmt.close(); } txn.commit();
     * } catch( SQLException sqle) { s_logger.warn("Error in cleaning up",
     * sqle); } }
     *
     * return templateZonePairList; }
     */

    /*
     * private String getExtrasWhere(TemplateFilter templateFilter, String name,
     * String keyword, boolean isIso, Boolean bootable, HypervisorType
     * hyperType, Long zoneId, boolean onlyReady, boolean showDomr, String
     * zoneType) { String sql = ""; if (keyword != null) { sql +=
     * " t.name LIKE \"%" + keyword + "%\" AND"; } else if (name != null) { sql
     * += " t.name LIKE \"%" + name + "%\" AND"; }
     *
     * if (isIso) { sql += " t.format = 'ISO'"; if
     * (!hyperType.equals(HypervisorType.None)) { sql +=
     * " AND goh.hypervisor_type = '" + hyperType.toString() + "'"; } } else {
     * sql += " t.format <> 'ISO'"; if (!hyperType.equals(HypervisorType.None))
     * { sql += " AND t.hypervisor_type = '" + hyperType.toString() + "'"; } }
     *
     * if (bootable != null) { sql += " AND t.bootable = " + bootable; }
     *
     * if (onlyReady){ sql += " AND thr.download_state = '"
     * +Status.DOWNLOADED.toString() + "'" + " AND thr.destroyed=0 "; if (zoneId
     * != null){ sql += " AND h.data_center_id = " +zoneId; } }else if (zoneId
     * != null){ sql += " AND tzr.zone_id = " +zoneId+
     * " AND tzr.removed is null" ; }else{ sql += " AND tzr.removed is null "; }
     *
     * if (zoneType != null){ sql += " AND dc.networktype = '" + zoneType + "'";
     * }
     *
     * if (!showDomr){ sql += " AND t.type != '"
     * +Storage.TemplateType.SYSTEM.toString() + "'"; }
     *
     * sql += " AND t.removed IS NULL";
     *
     * return sql; }
     *
     * private String getOrderByLimit(Long pageSize, Long startIndex) { Boolean
     * isAscending =
     * Boolean.parseBoolean(_configDao.getValue("sortkey.algorithm"));
     * isAscending = (isAscending == null ? true : isAscending);
     *
     * String sql; if (isAscending) { sql = " ORDER BY t.sort_key ASC"; } else {
     * sql = " ORDER BY t.sort_key DESC"; }
     *
     * if ((pageSize != null) && (startIndex != null)) { sql += " LIMIT " +
     * startIndex.toString() + "," + pageSize.toString(); } return sql; }
     */

    @SuppressWarnings("unchecked")
    @Override
    @DB
    public long addTemplateToZone(VMTemplateVO tmplt, long zoneId) {
        TransactionLegacy txn = TransactionLegacy.currentTxn();
        txn.start();
        VMTemplateVO tmplt2 = findById(tmplt.getId());
        if (tmplt2 == null) {
            if (persist(tmplt) == null) {
                throw new CloudRuntimeException("Failed to persist the template " + tmplt);
            }

            if (tmplt.getDetails() != null) {
                List<VMTemplateDetailVO> details = new ArrayList<VMTemplateDetailVO>();
                for (String key : tmplt.getDetails().keySet()) {
                    details.add(new VMTemplateDetailVO(tmplt.getId(), key, tmplt.getDetails().get(key), true));
                }
                _templateDetailsDao.saveDetails(details);
            }
        }
        VMTemplateZoneVO tmpltZoneVO = _templateZoneDao.findByZoneTemplate(zoneId, tmplt.getId());
        if (tmpltZoneVO == null) {
            tmpltZoneVO = new VMTemplateZoneVO(zoneId, tmplt.getId(), new Date());
            _templateZoneDao.persist(tmpltZoneVO);
        } else {
            tmpltZoneVO.setRemoved(GenericDaoBase.DATE_TO_NULL);
            tmpltZoneVO.setLastUpdated(new Date());
            _templateZoneDao.update(tmpltZoneVO.getId(), tmpltZoneVO);
        }
        txn.commit();

        return tmplt.getId();
    }

    @Override
    @DB
    public List<VMTemplateVO> listAllInZone(long dataCenterId) {
        SearchCriteria<VMTemplateVO> sc = TmpltsInZoneSearch.create();
        sc.setParameters("avoidtype", TemplateType.PERHOST.toString());
        sc.setParameters("state", VirtualMachineTemplate.State.Active);
        sc.setJoinParameters("tmpltzone", "zoneId", dataCenterId);
        return listBy(sc);
    }

    @Override
    public List<VMTemplateVO> listInZoneByState(long dataCenterId, VirtualMachineTemplate.State... states) {
        SearchCriteria<VMTemplateVO> sc = TmpltsInZoneSearch.create();
        sc.setParameters("avoidtype", TemplateType.PERHOST.toString());
        sc.setParameters("state", (Object[])states);
        sc.setJoinParameters("tmpltzone", "zoneId", dataCenterId);
        return listBy(sc);
    }

    @Override
    public List<VMTemplateVO> listAllActive() {
        SearchCriteria<VMTemplateVO> sc = ActiveTmpltSearch.create();
        sc.setParameters("state", VirtualMachineTemplate.State.Active.toString());
        return listBy(sc);
    }

    @Override
    public List<VMTemplateVO> listByState(VirtualMachineTemplate.State... states) {
        SearchCriteria<VMTemplateVO> sc = ActiveTmpltSearch.create();
        sc.setParameters("state", (Object[])states);
        return listBy(sc);
    }

    @Override
    public List<VMTemplateVO> listDefaultBuiltinTemplates() {
        SearchCriteria<VMTemplateVO> sc = tmpltTypeSearch.create();
        sc.setParameters("templateType", Storage.TemplateType.BUILTIN);
        sc.setParameters("state", VirtualMachineTemplate.State.Active);
        return listBy(sc);
    }

    @Override
    public VMTemplateVO findSystemVMTemplate(long zoneId) {
        SearchCriteria<VMTemplateVO> sc = tmpltTypeHyperSearch.create();
        sc.setParameters("templateType", Storage.TemplateType.SYSTEM);
        sc.setJoinParameters("tmplHyper", "type", Host.Type.Routing);
        sc.setJoinParameters("tmplHyper", "zoneId", zoneId);

        // order by descending order of id and select the first (this is going
        // to be the latest)
        List<VMTemplateVO> tmplts = listBy(sc, new Filter(VMTemplateVO.class, "id", false, null, 1l));

        if (tmplts.size() > 0) {
            return tmplts.get(0);
        } else {
            return null;
        }
    }

    @Override
    public VMTemplateVO findSystemVMReadyTemplate(long zoneId, HypervisorType hypervisorType) {
        SearchCriteria<VMTemplateVO> sc = readySystemTemplateSearch.create();
        sc.setParameters("templateType", Storage.TemplateType.SYSTEM);
        sc.setParameters("state", VirtualMachineTemplate.State.Active);
        sc.setJoinParameters("tmplHyper", "type", Host.Type.Routing);
        sc.setJoinParameters("tmplHyper", "zoneId", zoneId);
        sc.setJoinParameters("vmTemplateJoinTemplateStoreRef", "downloadState", new VMTemplateStorageResourceAssoc.Status[] {VMTemplateStorageResourceAssoc.Status.DOWNLOADED, VMTemplateStorageResourceAssoc.Status.BYPASSED});

        // order by descending order of id
        List<VMTemplateVO> tmplts = listBy(sc, new Filter(VMTemplateVO.class, "id", false, null, null));

        if (tmplts.size() > 0) {
            if (hypervisorType == HypervisorType.Any) {
                return tmplts.get(0);
            }
            for (VMTemplateVO tmplt : tmplts) {
                if (tmplt.getHypervisorType() == hypervisorType) {
                    return tmplt;
                }
            }

        }
        return null;
    }

    @Override
    public VMTemplateVO findRoutingTemplate(HypervisorType hType, String templateName) {
        SearchCriteria<VMTemplateVO> sc = tmpltTypeHyperSearch2.create();
        sc.setParameters("templateType", TemplateType.ROUTING);
        sc.setParameters("hypervisorType", hType);
        if (templateName != null) {
            sc.setParameters("templateName", templateName);
        }

        // order by descending order of id and select the first (this is going
        // to be the latest)
        List<VMTemplateVO> tmplts = listBy(sc, new Filter(VMTemplateVO.class, "id", false, null, 1l));

        if (tmplts.size() > 0) {
            return tmplts.get(0);
        } else {
            sc = tmpltTypeHyperSearch2.create();
            sc.setParameters("templateType", TemplateType.SYSTEM);
            sc.setParameters("hypervisorType", hType);
            if (templateName != null) {
                sc.setParameters("templateName", templateName);
            }

            // order by descending order of id and select the first (this is going
            // to be the latest)
            tmplts = listBy(sc, new Filter(VMTemplateVO.class, "id", false, null, 1l));

            if (tmplts.size() > 0) {
                return tmplts.get(0);
            } else {
                return null;
            }
        }
    }

    @Override
    public Long countTemplatesForAccount(long accountId) {
        SearchCriteria<Long> sc = CountTemplatesByAccount.create();
        sc.setParameters("account", accountId);
        sc.setParameters("state", VirtualMachineTemplate.State.Active.toString());
        return customSearch(sc, null).get(0);
    }

    @Override
    @DB
    public boolean remove(Long id) {
        TransactionLegacy txn = TransactionLegacy.currentTxn();
        txn.start();
        VMTemplateVO template = createForUpdate();
        template.setRemoved(new Date());

        VMTemplateVO vo = findById(id);
        if (vo != null) {
            if (vo.getFormat() == ImageFormat.ISO) {
                _tagsDao.removeByIdAndType(id, ResourceObjectType.ISO);
            } else {
                _tagsDao.removeByIdAndType(id, ResourceObjectType.Template);
            }
        }

        boolean result = update(id, template);
        txn.commit();
        return result;
    }

    @Override
    public List<VMTemplateVO> findTemplatesToSyncToS3() {
        return executeList(SELECT_S3_CANDIDATE_TEMPLATES, new Object[] {});
    }

    /*
     * @Override public Set<Pair<Long, Long>> searchS3Templates(final String
     * name, final String keyword, final TemplateFilter templateFilter, final
     * boolean isIso, final List<HypervisorType> hypers, final Boolean bootable,
     * final DomainVO domain, final Long pageSize, final Long startIndex, final
     * Long zoneId, final HypervisorType hyperType, final boolean onlyReady,
     * final boolean showDomr, final List<Account> permittedAccounts, final
     * Account caller, final Map<String, String> tags) {
     *
     * final String permittedAccountsStr = join(",", permittedAccounts);
     *
     * final TransactionLegacy txn = TransactionLegacy.currentTxn(); txn.start();
     *
     * Set<Pair<Long, Long>> templateZonePairList = new HashSet<Pair<Long,
     * Long>>(); PreparedStatement pstmt = null; ResultSet rs = null; try {
     *
     * final StringBuilder joinClause = new StringBuilder(); final StringBuilder
     * whereClause = new StringBuilder(" WHERE t.removed IS NULL");
     *
     * if (isIso) { whereClause.append(" AND t.format = 'ISO'"); if
     * (!hyperType.equals(HypervisorType.None)) { joinClause.append(
     * " INNER JOIN guest_os guestOS on (guestOS.id = t.guest_os_id) INNER JOIN guest_os_hypervisor goh on ( goh.guest_os_id = guestOS.id) "
     * ); whereClause.append(" AND goh.hypervisor_type = '");
     * whereClause.append(hyperType); whereClause.append("'"); } } else {
     * whereClause.append(" AND t.format <> 'ISO'"); if (hypers.isEmpty()) {
     * return templateZonePairList; } else { final StringBuilder relatedHypers =
     * new StringBuilder(); for (HypervisorType hyper : hypers) {
     * relatedHypers.append("'"); relatedHypers.append(hyper.toString());
     * relatedHypers.append("'"); relatedHypers.append(","); }
     * relatedHypers.setLength(relatedHypers.length() - 1);
     * whereClause.append(" AND t.hypervisor_type IN (");
     * whereClause.append(relatedHypers); whereClause.append(")"); } }
     *
     * joinClause.append(
     * " INNER JOIN  template_s3_ref tsr on (t.id = tsr.template_id)");
     *
     * whereClause.append("AND t.name LIKE \"%"); whereClause.append(keyword ==
     * null ? keyword : name); whereClause.append("%\"");
     *
     * if (bootable != null) { whereClause.append(" AND t.bootable = ");
     * whereClause.append(bootable); }
     *
     * if (!showDomr) { whereClause.append(" AND t.type != '");
     * whereClause.append(Storage.TemplateType.SYSTEM); whereClause.append("'");
     * }
     *
     * if (templateFilter == TemplateFilter.featured) {
     * whereClause.append(" AND t.public = 1 AND t.featured = 1"); } else if
     * ((templateFilter == TemplateFilter.self || templateFilter ==
     * TemplateFilter.selfexecutable) && caller.getType() !=
     * Account.ACCOUNT_TYPE_ADMIN) { if (caller.getType() ==
     * Account.ACCOUNT_TYPE_DOMAIN_ADMIN || caller.getType() ==
     * Account.ACCOUNT_TYPE_RESOURCE_DOMAIN_ADMIN) { joinClause.append(
     * " INNER JOIN account a on (t.account_id = a.id) INNER JOIN domain d on (a.domain_id = d.id)"
     * ); whereClause.append("  AND d.path LIKE '");
     * whereClause.append(domain.getPath()); whereClause.append("%'"); } else {
     * whereClause.append(" AND t.account_id IN (");
     * whereClause.append(permittedAccountsStr); whereClause.append(")"); } }
     * else if (templateFilter == TemplateFilter.sharedexecutable &&
     * caller.getType() != Account.ACCOUNT_TYPE_ADMIN) { if (caller.getType() ==
     * Account.ACCOUNT_TYPE_NORMAL) { joinClause.append(
     * " LEFT JOIN launch_permission lp ON t.id = lp.template_id WHERE (t.account_id IN ("
     * ); joinClause.append(permittedAccountsStr);
     * joinClause.append(") OR lp.account_id IN (");
     * joinClause.append(permittedAccountsStr); joinClause.append("))"); } else
     * { joinClause.append(" INNER JOIN account a on (t.account_id = a.id) "); }
     * } else if (templateFilter == TemplateFilter.executable &&
     * !permittedAccounts.isEmpty()) {
     * whereClause.append(" AND (t.public = 1 OR t.account_id IN (");
     * whereClause.append(permittedAccountsStr); whereClause.append("))"); }
     * else if (templateFilter == TemplateFilter.community) {
     * whereClause.append(" AND t.public = 1 AND t.featured = 0"); } else if
     * (templateFilter == TemplateFilter.all && caller.getType() ==
     * Account.ACCOUNT_TYPE_ADMIN) { } else if (caller.getType() !=
     * Account.ACCOUNT_TYPE_ADMIN) { return templateZonePairList; }
     *
     * final StringBuilder sql = new StringBuilder(SELECT_TEMPLATE_S3_REF);
     * sql.append(joinClause); sql.append(whereClause);
     * sql.append(getOrderByLimit(pageSize, startIndex));
     *
     * pstmt = txn.prepareStatement(sql.toString()); rs = pstmt.executeQuery();
     * while (rs.next()) { final Pair<Long, Long> templateZonePair = new
     * Pair<Long, Long>( rs.getLong(1), -1L);
     * templateZonePairList.add(templateZonePair); } txn.commit(); } catch
     * (Exception e) { s_logger.warn("Error listing S3 templates", e); if (txn
     * != null) { txn.rollback(); } } finally { closeResources(pstmt, rs); if
     * (txn != null) { txn.close(); } }
     *
     * return templateZonePairList; }
     */

    @Override
    public boolean updateState(
            com.cloud.template.VirtualMachineTemplate.State currentState,
            com.cloud.template.VirtualMachineTemplate.Event event,
            com.cloud.template.VirtualMachineTemplate.State nextState,
            VirtualMachineTemplate vo, Object data) {

        Long oldUpdated = vo.getUpdatedCount();
        Date oldUpdatedTime = vo.getUpdated();

        SearchCriteria<VMTemplateVO> sc = AllFieldsSearch.create();
        sc.setParameters("id", vo.getId());
        sc.setParameters("state", currentState);
        sc.setParameters("updatedCount", vo.getUpdatedCount());

        vo.incrUpdatedCount();

        UpdateBuilder builder = getUpdateBuilder(vo);
        builder.set(vo, "state", nextState);
        builder.set(vo, "updated", new Date());

        int rows = update((VMTemplateVO)vo, sc);
        if (rows == 0 && s_logger.isDebugEnabled()) {
            VMTemplateVO dbTemplate = findByIdIncludingRemoved(vo.getId());
            if (dbTemplate != null) {
                StringBuilder str = new StringBuilder("Unable to update ").append(vo.toString());
                str.append(": DB Data={id=")
                    .append(dbTemplate.getId())
                    .append("; state=")
                    .append(dbTemplate.getState())
                    .append("; updatecount=")
                    .append(dbTemplate.getUpdatedCount())
                    .append(";updatedTime=")
                    .append(dbTemplate.getUpdated());
                str.append(": New Data={id=")
                    .append(vo.getId())
                    .append("; state=")
                    .append(nextState)
                    .append("; event=")
                    .append(event)
                    .append("; updatecount=")
                    .append(vo.getUpdatedCount())
                    .append("; updatedTime=")
                    .append(vo.getUpdated());
                str.append(": stale Data={id=")
                    .append(vo.getId())
                    .append("; state=")
                    .append(currentState)
                    .append("; event=")
                    .append(event)
                    .append("; updatecount=")
                    .append(oldUpdated)
                    .append("; updatedTime=")
                    .append(oldUpdatedTime);
            } else {
                s_logger.debug("Unable to update template: id=" + vo.getId() + ", as no such template exists in the database anymore");
            }
        }
        return rows > 0;
    }
}
