private void buildFilters() {
SearchFactoryImplementor searchFactoryImplementor = getSearchFactoryImplementor();
if ( filterDefinitions != null && filterDefinitions.size() > 0 ) {
ChainedFilter chainedFilter = new ChainedFilter();
for ( FullTextFilterImpl filterDefinition : filterDefinitions.values() ) {
FilterDef def = searchFactoryImplementor.getFilterDefinition( filterDefinition.getName() );
Class implClass = def.getImpl();
Object instance;
try {
instance = implClass.newInstance();
}
catch (InstantiationException e) {
throw new SearchException( "Unable to create @FullTextFilterDef: " + def.getImpl(), e );
}
catch (IllegalAccessException e) {
throw new SearchException( "Unable to create @FullTextFilterDef: " + def.getImpl(), e );
}
for ( Map.Entry<String, Object> entry : filterDefinition.getParameters().entrySet() ) {
def.invoke( entry.getKey(), instance, entry.getValue() );
}
if ( def.isCache() && def.getKeyMethod() == null && filterDefinition.getParameters().size() > 0 ) {
throw new SearchException("Filter with parameters and no @Key method: " + filterDefinition.getName() );
}
FilterKey key = null;
if ( def.isCache() ) {
if ( def.getKeyMethod() == null ) {
key = new FilterKey( ) {
public int hashCode() {
return getImpl().hashCode();
}
public boolean equals(Object obj) {
if ( ! ( obj instanceof FilterKey ) ) return false;
FilterKey that = (FilterKey) obj;
return this.getImpl().equals( that.getImpl() );
}
};
}
else {
try {
key = (FilterKey) def.getKeyMethod().invoke( instance );
}
catch (IllegalAccessException e) {
throw new SearchException("Unable to access @Key method: "
+ def.getImpl().getName() + "." + def.getKeyMethod().getName() );
}
catch (InvocationTargetException e) {
throw new SearchException("Unable to access @Key method: "
+ def.getImpl().getName() + "." + def.getKeyMethod().getName() );
}
catch (ClassCastException e) {
throw new SearchException("@Key method does not return FilterKey: "
+ def.getImpl().getName() + "." + def.getKeyMethod().getName() );
}
}
key.setImpl( def.getImpl() );
}
Filter filter = def.isCache() ?
searchFactoryImplementor.getFilterCachingStrategy().getCachedFilter( key ) :
null;
if (filter == null) {
if ( def.getFactoryMethod() != null ) {
try {
filter = (Filter) def.getFactoryMethod().invoke( instance );
}
catch (IllegalAccessException e) {
throw new SearchException("Unable to access @Factory method: "
+ def.getImpl().getName() + "." + def.getFactoryMethod().getName() );
}
catch (InvocationTargetException e) {
throw new SearchException("Unable to access @Factory method: "
+ def.getImpl().getName() + "." + def.getFactoryMethod().getName() );
}
catch (ClassCastException e) {
throw new SearchException("@Key method does not return a org.apache.lucene.search.Filter class: "
+ def.getImpl().getName() + "." + def.getFactoryMethod().getName() );
}
}
else {
try {
filter = (Filter) instance;
}
catch (ClassCastException e) {
throw new SearchException("@Key method does not return a org.apache.lucene.search.Filter class: "
+ def.getImpl().getName() + "." + def.getFactoryMethod().getName() );
}
}
if ( def.isCache() ) searchFactoryImplementor.getFilterCachingStrategy().addCachedFilter( key, filter );
}
chainedFilter.addFilter( filter );
}
if ( filter != null ) chainedFilter.addFilter( filter );
filter = chainedFilter;