if ( source == null ) {
return null;
}
Accumulate accumulate = null;
if ( accumDescr.isExternalFunction() ) {
// if it is an external function, build a method for it
// TODO: add the support to multiple functions
AccumulateFunctionCallDescr func = accumDescr.getFunctions().get( 0 );
AccumulateFunction function = context.getConfiguration().getAccumulateFunction( func.getFunction() );
if ( function == null ) {
context.getErrors().add( new DescrBuildError( accumDescr,
context.getRuleDescr(),
null,
"Unknown accumulate function: '" + func.getFunction() + "' on rule '" + context.getRuleDescr().getName() + "'. All accumulate functions must be registered before building a resource." ) );
return null;
}
final JavaAnalysisResult analysis = (JavaAnalysisResult) context.getDialect().analyzeBlock( context,
accumDescr,
func.getParams().length > 0 ? func.getParams()[0] : "\"\"",
new BoundIdentifiers( declCls, context.getPackageBuilder().getGlobals() ) );
final BoundIdentifiers usedIdentifiers = analysis.getBoundIdentifiers();
final Declaration[] previousDeclarations = usedIdentifiers.getDeclarations().values().toArray(new Declaration[usedIdentifiers.getDeclarations().size()]);
final Declaration[] sourceDeclArr = (Declaration[]) source.getOuterDeclarations().values().toArray( new Declaration[0] );
final String className = "accumulateExpression" + context.getNextId();
final Map<String, Object> map = createVariableContext( className,
func.getParams().length > 0 ? func.getParams()[0] : "\"\"",
context,
previousDeclarations,
sourceDeclArr,
usedIdentifiers.getGlobals(),
null );
map.put( "readLocalsFromTuple",
accumDescr.isMultiPattern() ? Boolean.TRUE : Boolean.FALSE );
JavaAccumulatorFunctionExecutor accumulator = new JavaAccumulatorFunctionExecutor( function );
accumulate = new Accumulate( source,
previousDeclarations,
sourceDeclArr,
new Accumulator[]{accumulator} );
generatTemplates( "returnValueMethod",
"returnValueInvoker",
context,
className,
map,
accumulator,
accumDescr );
} else {
// ELSE, if it is not an external function, build it using the regular java builder
final String className = "Accumulate" + context.getNextId();
accumDescr.setClassName( className );
BoundIdentifiers available = new BoundIdentifiers( declCls, context.getPackageBuilder().getGlobals() );
final JavaAnalysisResult initCodeAnalysis = (JavaAnalysisResult) context.getDialect().analyzeBlock( context,
accumDescr,
accumDescr.getInitCode(),
available );
final AnalysisResult actionCodeAnalysis = context.getDialect().analyzeBlock( context,
accumDescr,
accumDescr.getActionCode(),
available );
final AnalysisResult resultCodeAnalysis = context.getDialect().analyzeExpression( context,
accumDescr,
accumDescr.getResultCode(),
available );
final Set<String> requiredDeclarations = new HashSet<String>( initCodeAnalysis.getBoundIdentifiers().getDeclarations().keySet() );
requiredDeclarations.addAll( actionCodeAnalysis.getBoundIdentifiers().getDeclarations().keySet() );
requiredDeclarations.addAll( resultCodeAnalysis.getBoundIdentifiers().getDeclarations().keySet() );
final Map<String, Class<?>> requiredGlobals = new HashMap<String, Class<?>>( initCodeAnalysis.getBoundIdentifiers().getGlobals() );
requiredGlobals.putAll( actionCodeAnalysis.getBoundIdentifiers().getGlobals() );
requiredGlobals.putAll( resultCodeAnalysis.getBoundIdentifiers().getGlobals() );
if ( accumDescr.getReverseCode() != null ) {
final AnalysisResult reverseCodeAnalysis = context.getDialect().analyzeBlock( context,
accumDescr,
accumDescr.getActionCode(),
available );
requiredDeclarations.addAll( reverseCodeAnalysis.getBoundIdentifiers().getDeclarations().keySet() );
requiredGlobals.putAll( reverseCodeAnalysis.getBoundIdentifiers().getGlobals() );
}
final Declaration[] declarations = new Declaration[requiredDeclarations.size()];
int i = 0;
for ( Iterator<String> it = requiredDeclarations.iterator(); it.hasNext(); i++ ) {
declarations[i] = decls.get( it.next() );
}
final Declaration[] sourceDeclArr = (Declaration[]) source.getOuterDeclarations().values().toArray( new Declaration[0] );
final Map<String, Object> map = createVariableContext( className,
null,
context,
declarations,
null,
requiredGlobals,
null );
map.put( "className",
accumDescr.getClassName() );
map.put( "innerDeclarations",
sourceDeclArr );
map.put( "isMultiPattern",
accumDescr.isMultiPattern() ? Boolean.TRUE : Boolean.FALSE );
final String initCode = this.fixInitCode( initCodeAnalysis,
accumDescr.getInitCode() );
final String actionCode = accumDescr.getActionCode();
final String resultCode = accumDescr.getResultCode();
String[] attributesTypes = new String[initCodeAnalysis.getLocalVariablesMap().size()];
String[] attributes = new String[initCodeAnalysis.getLocalVariablesMap().size()];
int index = 0;
for ( Map.Entry<String, JavaLocalDeclarationDescr> entry : initCodeAnalysis.getLocalVariablesMap().entrySet() ) {
attributes[index] = entry.getKey();
attributesTypes[index] = entry.getValue().getType();
index++;
}
map.put( "attributes",
attributes );
map.put( "attributesTypes",
attributesTypes );
map.put( "initCode",
initCode );
map.put( "actionCode",
actionCode );
map.put( "resultCode",
resultCode );
if ( accumDescr.getReverseCode() == null ) {
map.put( "reverseCode",
"" );
map.put( "supportsReverse",
"false" );
} else {
map.put( "reverseCode",
accumDescr.getReverseCode() );
map.put( "supportsReverse",
"true" );
}
map.put( "hashCode",
new Integer( actionCode.hashCode() ) );
accumulate = new Accumulate( source,
declarations,
sourceDeclArr );
generatTemplates( "accumulateInnerClass",
"accumulateInvoker",