| Methods Summary |
|---|
| public void | cacheGrammars(java.lang.String grammarType, org.apache.xerces.xni.grammars.Grammar[] grammars)
if (!fPoolIsLocked) {
for (int i = 0; i < grammars.length; ++i) {
putGrammar(grammars[i]);
}
}
|
| private void | clean()Removes stale entries from the pool.
Reference ref = fReferenceQueue.poll();
while (ref != null) {
Entry entry = ((SoftGrammarReference) ref).entry;
if (entry != null) {
removeEntry(entry);
}
ref = fReferenceQueue.poll();
}
|
| public void | clear()
for (int i=0; i<fGrammars.length; i++) {
if(fGrammars[i] != null) {
fGrammars[i].clear();
fGrammars[i] = null;
}
}
fGrammarCount = 0;
|
| public boolean | containsGrammar(org.apache.xerces.xni.grammars.XMLGrammarDescription desc)Returns true if the grammar pool contains a grammar associated
to the specified grammar description. Currently, the root element name
is used as the key for DTD grammars and the target namespace is used
as the key for Schema grammars.
synchronized (fGrammars) {
clean();
int hash = hashCode(desc);
int index = (hash & 0x7FFFFFFF) % fGrammars.length;
for (Entry entry = fGrammars[index]; entry != null ; entry = entry.next) {
Grammar tempGrammar = (Grammar) entry.grammar.get();
/** If the soft reference has been cleared, remove this entry from the pool. */
if (tempGrammar == null) {
removeEntry(entry);
}
else if ((entry.hash == hash) && equals(entry.desc, desc)) {
return true;
}
}
return false;
}
|
| public boolean | equals(org.apache.xerces.xni.grammars.XMLGrammarDescription desc1, org.apache.xerces.xni.grammars.XMLGrammarDescription desc2)This method checks whether two grammars are the same. Currently, we compare
the root element names for DTD grammars and the target namespaces for Schema grammars.
The application can override this behaviour and add its own logic.
if (desc1 instanceof XMLSchemaDescription) {
if (!(desc2 instanceof XMLSchemaDescription)) {
return false;
}
final XMLSchemaDescription sd1 = (XMLSchemaDescription) desc1;
final XMLSchemaDescription sd2 = (XMLSchemaDescription) desc2;
final String targetNamespace = sd1.getTargetNamespace();
if (targetNamespace != null) {
if (!targetNamespace.equals(sd2.getTargetNamespace())) {
return false;
}
}
else if (sd2.getTargetNamespace() != null) {
return false;
}
// The JAXP 1.3 spec says that the implementation can assume that
// if two schema location hints are the same they always resolve
// to the same document. In the default grammar pool implementation
// we only look at the target namespaces. Here we also compare
// location hints.
final String expandedSystemId = sd1.getExpandedSystemId();
if (expandedSystemId != null) {
if (!expandedSystemId.equals(sd2.getExpandedSystemId())) {
return false;
}
}
else if (sd2.getExpandedSystemId() != null) {
return false;
}
return true;
}
return desc1.equals(desc2);
|
| public org.apache.xerces.xni.grammars.Grammar | getGrammar(org.apache.xerces.xni.grammars.XMLGrammarDescription desc)Returns the grammar associated to the specified grammar description.
Currently, the root element name is used as the key for DTD grammars
and the target namespace is used as the key for Schema grammars.
synchronized (fGrammars) {
clean();
int hash = hashCode(desc);
int index = (hash & 0x7FFFFFFF) % fGrammars.length;
for (Entry entry = fGrammars[index]; entry != null; entry = entry.next) {
Grammar tempGrammar = (Grammar) entry.grammar.get();
/** If the soft reference has been cleared, remove this entry from the pool. */
if (tempGrammar == null) {
removeEntry(entry);
}
else if ((entry.hash == hash) && equals(entry.desc, desc)) {
return tempGrammar;
}
}
return null;
}
|
| public int | hashCode(org.apache.xerces.xni.grammars.XMLGrammarDescription desc)Returns the hash code value for the given grammar description.
if (desc instanceof XMLSchemaDescription) {
final XMLSchemaDescription sd = (XMLSchemaDescription) desc;
final String targetNamespace = sd.getTargetNamespace();
final String expandedSystemId = sd.getExpandedSystemId();
int hash = (targetNamespace != null) ? targetNamespace.hashCode() : 0;
hash ^= (expandedSystemId != null) ? expandedSystemId.hashCode() : 0;
return hash;
}
return desc.hashCode();
|
| public void | lockPool()
fPoolIsLocked = true;
|
| public void | putGrammar(org.apache.xerces.xni.grammars.Grammar grammar)Puts the specified grammar into the grammar pool and associates it to
its root element name or its target namespace.
if (!fPoolIsLocked) {
synchronized (fGrammars) {
clean();
XMLGrammarDescription desc = grammar.getGrammarDescription();
int hash = hashCode(desc);
int index = (hash & 0x7FFFFFFF) % fGrammars.length;
for (Entry entry = fGrammars[index]; entry != null; entry = entry.next) {
if (entry.hash == hash && equals(entry.desc, desc)) {
if (entry.grammar.get() != grammar) {
entry.grammar = new SoftGrammarReference(entry, grammar, fReferenceQueue);
}
return;
}
}
// create a new entry
Entry entry = new Entry(hash, index, desc, grammar, fGrammars[index], fReferenceQueue);
fGrammars[index] = entry;
fGrammarCount++;
}
}
|
| private org.apache.xerces.xni.grammars.Grammar | removeEntry(org.apache.xerces.jaxp.validation.SoftReferenceGrammarPool$Entry entry)Removes the given entry from the pool
if (entry.prev != null) {
entry.prev.next = entry.next;
}
else {
fGrammars[entry.bucket] = entry.next;
}
if (entry.next != null) {
entry.next.prev = entry.prev;
}
--fGrammarCount;
entry.grammar.entry = null;
return (Grammar) entry.grammar.get();
|
| public org.apache.xerces.xni.grammars.Grammar | removeGrammar(org.apache.xerces.xni.grammars.XMLGrammarDescription desc)Removes the grammar associated to the specified grammar description from the
grammar pool and returns the removed grammar. Currently, the root element name
is used as the key for DTD grammars and the target namespace is used
as the key for Schema grammars.
synchronized (fGrammars) {
clean();
int hash = hashCode(desc);
int index = (hash & 0x7FFFFFFF) % fGrammars.length;
for (Entry entry = fGrammars[index]; entry != null; entry = entry.next) {
if ((entry.hash == hash) && equals(entry.desc, desc)) {
return removeEntry(entry);
}
}
return null;
}
|
| public org.apache.xerces.xni.grammars.Grammar | retrieveGrammar(org.apache.xerces.xni.grammars.XMLGrammarDescription desc)
return getGrammar(desc);
|
| public org.apache.xerces.xni.grammars.Grammar[] | retrieveInitialGrammarSet(java.lang.String grammarType)
synchronized (fGrammars) {
clean();
// Return no grammars. This allows the garbage collector to sift
// out grammars which are not in use when memory demand is high.
// It also allows the pool to return the "right" schema grammar
// based on schema locations.
return ZERO_LENGTH_GRAMMAR_ARRAY;
}
|
| public void | unlockPool()
fPoolIsLocked = false;
|
