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## org.apache.velocity.runtime.resource
Class Resource

    java.lang.Object
      org.apache.velocity.runtime.resource.Resource

Direct Known Subclasses:
  ContentResource, Template

public abstract class Resource
extends Object

This class represent a general text resource that may have been retrieved from any number of possible sources.

Version:
  $Id: Resource.java 729843 2008-12-29 09:06:57Z byron $
Author:
  Jason van Zyl, Geir Magnusson Jr.

Field Summary
`protected Object` | `data` Resource might require ancillary storage of some kind
`protected String` | `encoding` Character encoding of this resource
`protected long` | `lastModified` The file modification time (in milliseconds) for the cached template.
`protected static long` | `MILLIS_PER_SECOND` The number of milliseconds in a minute, used to calculate the check interval.
`protected long` | `modificationCheckInterval` How often the file modification time is checked (in seconds).
`protected String` | `name` Name of the resource
`protected long` | `nextCheck` The next time the file modification time will be checked (in milliseconds).
`protected ResourceLoader` | `resourceLoader` The template loader that initially loaded the input stream for this template, and knows how to check the source of the input stream for modification.
`protected RuntimeServices` | `rsvc`
`protected int` | `type` Resource type (RESOURCE_TEMPLATE or RESOURCE_CONTENT)

Constructor Summary
`Resource()` Default constructor

Method Summary
`Object` | `getData()` Get arbitrary data object that might be used by the resource.
`String` | `getEncoding()` get the encoding of this resource for example, "ISO-8859-1"
`long` | `getLastModified()` Return the lastModifed time of this resource.
`String` | `getName()` Get the name of this template.
`ResourceLoader` | `getResourceLoader()` Return the template loader that pulled in the template stream
`int` | `getType()`
`boolean` | `isSourceModified()`
`abstract boolean` | `process()` Perform any subsequent processing that might need to be done by a resource.
`boolean` | `requiresChecking()` Is it time to check to see if the resource source has been updated?
`void` | `setData(Object data)` Set arbitrary data object that might be used by the resource.
`void` | `setEncoding(String encoding)` set the encoding of this resource for example, "ISO-8859-1"
`void` | `setLastModified(long lastModified)` Set the last modified time for this resource.
`void` | `setModificationCheckInterval(long modificationCheckInterval)` Set the modification check interval.
`void` | `setName(String name)` Set the name of this resource, for example test.vm.
`void` | `setResourceLoader(ResourceLoader resourceLoader)` Set the template loader for this template.
`void` | `setRuntimeServices(RuntimeServices rs)`
`void` | `setType(int type)` Sets the type of this Resource (RESOURCE_TEMPLATE or RESOURCE_CONTENT)
`void` | `touch()` 'Touch' this template and thereby resetting the nextCheck field.

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Field Detail

### rsvc

    protected RuntimeServices rsvc

### resourceLoader

    protected ResourceLoader resourceLoader

  The template loader that initially loaded the input stream for this template, and knows how to check the source of the input stream for modification.

### MILLIS_PER_SECOND

    protected static final long MILLIS_PER_SECOND

  The number of milliseconds in a minute, used to calculate the check interval.

  See Also:
    Constant Field Values

### modificationCheckInterval

    protected long modificationCheckInterval

  How often the file modification time is checked (in seconds).

### lastModified

    protected long lastModified

  The file modification time (in milliseconds) for the cached template.

### nextCheck

    protected long nextCheck

  The next time the file modification time will be checked (in milliseconds).

### name

    protected String name

  Name of the resource

### encoding

    protected String encoding

  Character encoding of this resource

### data

    protected Object data

  Resource might require ancillary storage of some kind

### type

    protected int type

  Resource type (RESOURCE_TEMPLATE or RESOURCE_CONTENT)

Constructor Detail

### Resource

    public Resource()

  Default constructor

Method Detail

### setRuntimeServices

    public void setRuntimeServices(RuntimeServices rs)

  Parameters:
    `rs` -

### process

    public abstract boolean process()
                             throws ResourceNotFoundException,
                                    ParseErrorException

  Perform any subsequent processing that might need to be done by a resource. In the case of a template the actual parsing of the input stream needs to be performed.

  Returns:
    Whether the resource could be processed successfully. For a `Template` or `ContentResource`, this indicates whether the resource could be read.
  Throws:
    `ResourceNotFoundException` - Similar in semantics as returning `false`.
    `ParseErrorException`

### isSourceModified

    public boolean isSourceModified()

  Returns:
    True if source has been modified.

### setModificationCheckInterval

    public void setModificationCheckInterval(long modificationCheckInterval)

  Set the modification check interval.

  Parameters:
    `modificationCheckInterval` - The interval (in seconds).

### requiresChecking

    public boolean requiresChecking()

  Is it time to check to see if the resource source has been updated?

  Returns:
    True if resource must be checked.

### touch

    public void touch()

  'Touch' this template and thereby resetting the nextCheck field.

### setName

    public void setName(String name)

  Set the name of this resource, for example test.vm.

  Parameters:
    `name` -

### getName

    public String getName()

  Get the name of this template.

  Returns:
    The name of this template.

### setEncoding

    public void setEncoding(String encoding)

  set the encoding of this resource for example, "ISO-8859-1"

  Parameters:
    `encoding` -

### getEncoding

    public String getEncoding()

  get the encoding of this resource for example, "ISO-8859-1"

  Returns:
    The encoding of this resource.

### getLastModified

    public long getLastModified()

  Return the lastModifed time of this resource.

  Returns:
    The lastModifed time of this resource.

### setLastModified

    public void setLastModified(long lastModified)

  Set the last modified time for this resource.

  Parameters:
    `lastModified` -

### getResourceLoader

    public ResourceLoader getResourceLoader()

  Return the template loader that pulled in the template stream

  Returns:
    The resource loader for this resource.

### setResourceLoader

    public void setResourceLoader(ResourceLoader resourceLoader)

  Set the template loader for this template. Set when the Runtime determines where this template came from the list of possible sources.

  Parameters:
    `resourceLoader` -

### setData

    public void setData(Object data)

  Set arbitrary data object that might be used by the resource.

  Parameters:
    `data` -

### getData

    public Object getData()

  Get arbitrary data object that might be used by the resource.

  Returns:
    The data object for this resource.

### setType

    public void setType(int type)

  Sets the type of this Resource (RESOURCE_TEMPLATE or RESOURCE_CONTENT)

  Since:
    1.6

### getType

    public int getType()

  Returns:
    type code of the Resource
  Since:
    1.6

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