org.apache.lucene.analysis.util

## Class AbstractAnalysisFactory

- java.lang.Object
- - org.apache.lucene.analysis.util.AbstractAnalysisFactory

- Direct Known Subclasses:
    CharFilterFactory, TokenFilterFactory, TokenizerFactory

      public abstract class AbstractAnalysisFactory
      extends Object

  Abstract parent class for analysis factories `TokenizerFactory`, `TokenFilterFactory` and `CharFilterFactory`.

  The typical lifecycle for a factory consumer is:

  1. Create factory via its constructor (or via XXXFactory.forName)
  2. (Optional) If the factory uses resources such as files, `ResourceLoaderAware.inform(ResourceLoader)` is called to initialize those resources.
  3. Consumer calls create() to obtain instances.

- - ### Field Summary

    Fields
    Modifier and Type | Field and Description
    --- | ---
    `static String` | `LUCENE_MATCH_VERSION_PARAM`
    `protected Version` | `luceneMatchVersion` the luceneVersion arg

  - ### Constructor Summary

    Constructors
    Modifier | Constructor and Description
    --- | ---
    `protected` | `AbstractAnalysisFactory(Map<String,String> args)` Initialize this factory via a set of key-value pairs.

  - ### Method Summary

    All Methods Instance Methods Concrete Methods
    Modifier and Type | Method and Description
    --- | ---
    `String` | `get(Map<String,String> args, String name)`
    `String` | `get(Map<String,String> args, String name, Collection<String> allowedValues)`
    `String` | `get(Map<String,String> args, String name, Collection<String> allowedValues, String defaultVal)`
    `String` | `get(Map<String,String> args, String name, Collection<String> allowedValues, String defaultVal, boolean caseSensitive)`
    `String` | `get(Map<String,String> args, String name, String defaultVal)`
    `protected boolean` | `getBoolean(Map<String,String> args, String name, boolean defaultVal)`
    `char` | `getChar(Map<String,String> args, String name, char defaultValue)`
    `String` | `getClassArg()`
    `protected float` | `getFloat(Map<String,String> args, String name, float defaultVal)`
    `protected int` | `getInt(Map<String,String> args, String name, int defaultVal)`
    `protected List<String>` | `getLines(ResourceLoader loader, String resource)` Returns the resource's lines (with content treated as UTF-8)
    `Version` | `getLuceneMatchVersion()`
    `Map<String,String>` | `getOriginalArgs()`
    `protected Pattern` | `getPattern(Map<String,String> args, String name)` Compiles a pattern for the value of the specified argument key `name`
    `Set<String>` | `getSet(Map<String,String> args, String name)` Returns whitespace- and/or comma-separated set of values, or null if none are found
    `protected CharArraySet` | `getSnowballWordSet(ResourceLoader loader, String wordFiles, boolean ignoreCase)` same as `getWordSet(ResourceLoader, String, boolean)`, except the input is in snowball format.
    `protected CharArraySet` | `getWordSet(ResourceLoader loader, String wordFiles, boolean ignoreCase)` Returns as `CharArraySet` from wordFiles, which can be a comma-separated list of filenames
    `boolean` | `isExplicitLuceneMatchVersion()`
    `String` | `require(Map<String,String> args, String name)`
    `String` | `require(Map<String,String> args, String name, Collection<String> allowedValues)`
    `String` | `require(Map<String,String> args, String name, Collection<String> allowedValues, boolean caseSensitive)`
    `protected boolean` | `requireBoolean(Map<String,String> args, String name)`
    `char` | `requireChar(Map<String,String> args, String name)`
    `protected float` | `requireFloat(Map<String,String> args, String name)`
    `protected int` | `requireInt(Map<String,String> args, String name)`
    `void` | `setExplicitLuceneMatchVersion(boolean isExplicitLuceneMatchVersion)`
    `protected List<String>` | `splitAt(char separator, String list)` Splits a list separated by zero or more given separator characters.
    `protected List<String>` | `splitFileNames(String fileNames)` Splits file names separated by comma character.

    - ### Methods inherited from class java.lang.Object

      `clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

- - ### Field Detail

    - #### LUCENE_MATCH_VERSION_PARAM

          public static final String LUCENE_MATCH_VERSION_PARAM

      See Also:
        Constant Field Values

    - #### luceneMatchVersion

          protected final Version luceneMatchVersion

      the luceneVersion arg

  - ### Constructor Detail

    - #### AbstractAnalysisFactory

          protected AbstractAnalysisFactory(Map<String,String> args)

      Initialize this factory via a set of key-value pairs.

  - ### Method Detail

    - #### getOriginalArgs

          public final Map<String,String> getOriginalArgs()

    - #### getLuceneMatchVersion

          public final Version getLuceneMatchVersion()

    - #### require

          public String require(Map<String,String> args,
                                String name)

    - #### require

          public String require(Map<String,String> args,
                                String name,
                                Collection<String> allowedValues)

    - #### require

          public String require(Map<String,String> args,
                                String name,
                                Collection<String> allowedValues,
                                boolean caseSensitive)

    - #### get

          public String get(Map<String,String> args,
                            String name)

    - #### get

          public String get(Map<String,String> args,
                            String name,
                            String defaultVal)

    - #### get

          public String get(Map<String,String> args,
                            String name,
                            Collection<String> allowedValues)

    - #### get

          public String get(Map<String,String> args,
                            String name,
                            Collection<String> allowedValues,
                            String defaultVal)

    - #### get

          public String get(Map<String,String> args,
                            String name,
                            Collection<String> allowedValues,
                            String defaultVal,
                            boolean caseSensitive)

    - #### requireInt

          protected final int requireInt(Map<String,String> args,
                                         String name)

    - #### getInt

          protected final int getInt(Map<String,String> args,
                                     String name,
                                     int defaultVal)

    - #### requireBoolean

          protected final boolean requireBoolean(Map<String,String> args,
                                                 String name)

    - #### getBoolean

          protected final boolean getBoolean(Map<String,String> args,
                                             String name,
                                             boolean defaultVal)

    - #### requireFloat

          protected final float requireFloat(Map<String,String> args,
                                             String name)

    - #### getFloat

          protected final float getFloat(Map<String,String> args,
                                         String name,
                                         float defaultVal)

    - #### requireChar

          public char requireChar(Map<String,String> args,
                                  String name)

    - #### getChar

          public char getChar(Map<String,String> args,
                              String name,
                              char defaultValue)

    - #### getSet

          public Set<String> getSet(Map<String,String> args,
                                    String name)

      Returns whitespace- and/or comma-separated set of values, or null if none are found

    - #### getPattern

          protected final Pattern getPattern(Map<String,String> args,
                                             String name)

      Compiles a pattern for the value of the specified argument key `name`

    - #### getWordSet

          protected final CharArraySet getWordSet(ResourceLoader loader,
                                                  String wordFiles,
                                                  boolean ignoreCase)
                                           throws IOException

      Returns as `CharArraySet` from wordFiles, which can be a comma-separated list of filenames
      Throws:
        `IOException`

    - #### getLines

          protected final List<String> getLines(ResourceLoader loader,
                                                String resource)
                                         throws IOException

      Returns the resource's lines (with content treated as UTF-8)
      Throws:
        `IOException`

    - #### getSnowballWordSet

          protected final CharArraySet getSnowballWordSet(ResourceLoader loader,
                                                          String wordFiles,
                                                          boolean ignoreCase)
                                                   throws IOException

      same as `getWordSet(ResourceLoader, String, boolean)`, except the input is in snowball format.
      Throws:
        `IOException`

    - #### splitFileNames

          protected final List<String> splitFileNames(String fileNames)

      Splits file names separated by comma character. File names can contain comma characters escaped by backslash '\'
      Parameters:
        `fileNames` - the string containing file names
      Returns:
        a list of file names with the escaping backslashed removed

    - #### splitAt

          protected final List<String> splitAt(char separator,
                                               String list)

      Splits a list separated by zero or more given separator characters. List items can contain comma characters escaped by backslash '\'. Whitespace is NOT trimmed from the returned list items.
      Parameters:
        `list` - the string containing the split list items
      Returns:
        a list of items with the escaping backslashes removed

    - #### getClassArg

          public String getClassArg()

      Returns:
        the string used to specify the concrete class name in a serialized representation: the class arg. If the concrete class name was not specified via a class arg, returns `getClass().getName()`.

    - #### isExplicitLuceneMatchVersion

          public boolean isExplicitLuceneMatchVersion()

    - #### setExplicitLuceneMatchVersion

          public void setExplicitLuceneMatchVersion(boolean isExplicitLuceneMatchVersion)

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