## org.apache.xerces.parsers
Class CachingParserPool.SynchronizedGrammarPool

    java.lang.Object
      org.apache.xerces.parsers.CachingParserPool.SynchronizedGrammarPool

All Implemented Interfaces:
  org.apache.xerces.xni.grammars.XMLGrammarPool

Enclosing class:
  CachingParserPool

    public static final class CachingParserPool.SynchronizedGrammarPool

extends java.lang.Object
implements org.apache.xerces.xni.grammars.XMLGrammarPool

Synchronized grammar pool.

Author:
  Andy Clark, IBM

Constructor Summary
`CachingParserPool.SynchronizedGrammarPool(org.apache.xerces.xni.grammars.XMLGrammarPool grammarPool)` Constructs a synchronized grammar pool.

Method Summary
`void` `cacheGrammars(java.lang.String grammarType, org.apache.xerces.xni.grammars.Grammar[] grammars)` return the final set of grammars that the validator ended up with.
`void` `clear()` clear the grammar pool
`void` `lockPool()` lock the grammar pool
`org.apache.xerces.xni.grammars.Grammar` `retrieveGrammar(org.apache.xerces.xni.grammars.XMLGrammarDescription gDesc)` This method requests that the application retrieve a grammar corresponding to the given GrammarIdentifier from its cache.
`org.apache.xerces.xni.grammars.Grammar[]` `retrieveInitialGrammarSet(java.lang.String grammarType)` retrieve the initial known set of grammars.
`void` `unlockPool()` unlock the grammar pool

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

Constructor Detail

### CachingParserPool.SynchronizedGrammarPool

    public CachingParserPool.SynchronizedGrammarPool(org.apache.xerces.xni.grammars.XMLGrammarPool grammarPool)

  Constructs a synchronized grammar pool.

Method Detail

### retrieveInitialGrammarSet

    public org.apache.xerces.xni.grammars.Grammar[] retrieveInitialGrammarSet(java.lang.String grammarType)

  Description copied from interface: `org.apache.xerces.xni.grammars.XMLGrammarPool`

  retrieve the initial known set of grammars. this method is called by a validator before the validation starts. the application can provide an initial set of grammars available to the current validation attempt.

  Specified by:
    `retrieveInitialGrammarSet` in interface `org.apache.xerces.xni.grammars.XMLGrammarPool`
  Parameters:
    `grammarType` - the type of the grammar, from the `org.apache.xerces.xni.grammars.Grammar` interface.
  Returns:
    the set of grammars the validator may put in its "bucket"

### retrieveGrammar

    public org.apache.xerces.xni.grammars.Grammar retrieveGrammar(org.apache.xerces.xni.grammars.XMLGrammarDescription gDesc)

  Description copied from interface: `org.apache.xerces.xni.grammars.XMLGrammarPool`

  This method requests that the application retrieve a grammar corresponding to the given GrammarIdentifier from its cache. If it cannot do so it must return null; the parser will then call the EntityResolver. An application must not call its EntityResolver itself from this method; this may result in infinite recursions.

  Specified by:
    `retrieveGrammar` in interface `org.apache.xerces.xni.grammars.XMLGrammarPool`
  Parameters:
    `gDesc` - The description of the Grammar being requested.
  Returns:
    the Grammar corresponding to this description or null if no such Grammar is known.

### cacheGrammars

    public void cacheGrammars(java.lang.String grammarType,
                              org.apache.xerces.xni.grammars.Grammar[] grammars)

  Description copied from interface: `org.apache.xerces.xni.grammars.XMLGrammarPool`

  return the final set of grammars that the validator ended up with. This method is called after the validation finishes. The application may then choose to cache some of the returned grammars.

  Specified by:
    `cacheGrammars` in interface `org.apache.xerces.xni.grammars.XMLGrammarPool`
  Parameters:
    `grammarType` - the type of the grammars being returned;
    `grammars` - an array containing the set of grammars being returned; order is not significant.

### lockPool

    public void lockPool()

  lock the grammar pool

  Specified by:
    `lockPool` in interface `org.apache.xerces.xni.grammars.XMLGrammarPool`

### clear

    public void clear()

  clear the grammar pool

  Specified by:
    `clear` in interface `org.apache.xerces.xni.grammars.XMLGrammarPool`

### unlockPool

    public void unlockPool()

  unlock the grammar pool

  Specified by:
    `unlockPool` in interface `org.apache.xerces.xni.grammars.XMLGrammarPool`

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