use of org.drools.core.spi.MvelAccumulator in project drools by kiegroup.
the class MVELAccumulateBuilder method build.
@SuppressWarnings("unchecked")
public RuleConditionElement build(final RuleBuildContext context, final BaseDescr descr, final Pattern prefixPattern) {
boolean typesafe = context.isTypesafe();
try {
final AccumulateDescr accumDescr = (AccumulateDescr) descr;
if (!accumDescr.hasValidInput()) {
return null;
}
final RuleConditionBuilder builder = (RuleConditionBuilder) context.getDialect().getBuilder(accumDescr.getInput().getClass());
// create source CE
final RuleConditionElement source = builder.build(context, accumDescr.getInput());
if (source == null) {
return null;
}
MVELDialect dialect = (MVELDialect) context.getDialect();
Map<String, Declaration> decls = context.getDeclarationResolver().getDeclarations(context.getRule());
Map<String, Declaration> sourceOuterDeclr = source.getOuterDeclarations();
Map<String, Class<?>> declarationClasses = DeclarationScopeResolver.getDeclarationClasses(decls);
declarationClasses.putAll(DeclarationScopeResolver.getDeclarationClasses(sourceOuterDeclr));
BoundIdentifiers boundIds = new BoundIdentifiers(declarationClasses, context);
final boolean readLocalsFromTuple = PackageBuilderUtil.isReadLocalsFromTuple(context, accumDescr, source);
Accumulator[] accumulators;
if (accumDescr.isExternalFunction()) {
// uses accumulate functions
accumulators = buildExternalFunctions(context, accumDescr, dialect, decls, sourceOuterDeclr, boundIds, readLocalsFromTuple);
} else {
// it is a custom accumulate
accumulators = buildCustomAccumulate(context, accumDescr, dialect, decls, sourceOuterDeclr, boundIds, readLocalsFromTuple);
}
List<Declaration> requiredDeclarations = new ArrayList<Declaration>();
for (Accumulator acc : accumulators) {
MvelAccumulator mvelAcc = (MvelAccumulator) acc;
Collections.addAll(requiredDeclarations, mvelAcc.getRequiredDeclarations());
}
MVELDialectRuntimeData data = (MVELDialectRuntimeData) context.getPkg().getDialectRuntimeRegistry().getDialectData("mvel");
Accumulate accumulate;
if (accumDescr.isMultiFunction()) {
accumulate = new MultiAccumulate(source, requiredDeclarations.toArray(new Declaration[requiredDeclarations.size()]), accumulators);
int index = 0;
for (Accumulator accumulator : accumulators) {
data.addCompileable(((MultiAccumulate) accumulate).new Wirer(index++), (MVELCompileable) accumulator);
((MVELCompileable) accumulator).compile(data, context.getRule());
}
} else {
accumulate = new SingleAccumulate(source, requiredDeclarations.toArray(new Declaration[requiredDeclarations.size()]), accumulators[0]);
data.addCompileable(((SingleAccumulate) accumulate).new Wirer(), (MVELCompileable) accumulators[0]);
((MVELCompileable) accumulators[0]).compile(data, context.getRule());
}
return accumulate;
} catch (Exception e) {
DialectUtil.copyErrorLocation(e, descr);
context.addError(new DescrBuildError(context.getParentDescr(), descr, e, "Unable to build expression for 'accumulate' : " + e.getMessage()));
return null;
} finally {
context.setTypesafe(typesafe);
}
}
use of org.drools.core.spi.MvelAccumulator in project drools by kiegroup.
the class MVELAccumulateBuilder method buildCustomAccumulate.
private Accumulator[] buildCustomAccumulate(final RuleBuildContext context, final AccumulateDescr accumDescr, MVELDialect dialect, Map<String, Declaration> decls, Map<String, Declaration> sourceOuterDeclr, BoundIdentifiers boundIds, boolean readLocalsFromTuple) {
Accumulator[] accumulators;
final MVELAnalysisResult initCodeAnalysis = (MVELAnalysisResult) dialect.analyzeBlock(context, accumDescr, accumDescr.getInitCode(), boundIds);
// need to copy boundIds, as this as a "this" object.
final MVELAnalysisResult actionCodeAnalysis = (MVELAnalysisResult) dialect.analyzeBlock(context, accumDescr.getActionCode(), boundIds, initCodeAnalysis.getMvelVariables(), "drools", KnowledgeHelper.class);
final MVELAnalysisResult resultCodeAnalysis = (MVELAnalysisResult) dialect.analyzeExpression(context, accumDescr, accumDescr.getResultCode(), boundIds, initCodeAnalysis.getMvelVariables());
context.setTypesafe(initCodeAnalysis.isTypesafe());
MVELCompilationUnit initUnit = dialect.getMVELCompilationUnit(accumDescr.getInitCode(), initCodeAnalysis, getUsedDeclarations(decls, initCodeAnalysis), getUsedDeclarations(sourceOuterDeclr, initCodeAnalysis), initCodeAnalysis.getMvelVariables(), context, "drools", KnowledgeHelper.class, readLocalsFromTuple, MVELCompilationUnit.Scope.CONSTRAINT);
context.setTypesafe(actionCodeAnalysis.isTypesafe());
MVELCompilationUnit actionUnit = dialect.getMVELCompilationUnit(accumDescr.getActionCode(), actionCodeAnalysis, getUsedDeclarations(decls, actionCodeAnalysis), getUsedDeclarations(sourceOuterDeclr, actionCodeAnalysis), initCodeAnalysis.getMvelVariables(), context, "drools", KnowledgeHelper.class, readLocalsFromTuple, MVELCompilationUnit.Scope.CONSTRAINT);
MVELCompilationUnit reverseUnit = null;
if (accumDescr.getReverseCode() != null) {
context.setTypesafe(actionCodeAnalysis.isTypesafe());
reverseUnit = dialect.getMVELCompilationUnit(accumDescr.getReverseCode(), actionCodeAnalysis, getUsedDeclarations(decls, actionCodeAnalysis), getUsedDeclarations(sourceOuterDeclr, actionCodeAnalysis), initCodeAnalysis.getMvelVariables(), context, "drools", KnowledgeHelper.class, readLocalsFromTuple, MVELCompilationUnit.Scope.CONSTRAINT);
}
context.setTypesafe(resultCodeAnalysis.isTypesafe());
MVELCompilationUnit resultUnit = dialect.getMVELCompilationUnit(accumDescr.getResultCode(), resultCodeAnalysis, getUsedDeclarations(decls, resultCodeAnalysis), getUsedDeclarations(sourceOuterDeclr, resultCodeAnalysis), initCodeAnalysis.getMvelVariables(), context, "drools", KnowledgeHelper.class, readLocalsFromTuple, MVELCompilationUnit.Scope.CONSTRAINT);
accumulators = new Accumulator[] { new MVELAccumulator(initUnit, actionUnit, reverseUnit, resultUnit) };
return accumulators;
}
use of org.drools.core.spi.MvelAccumulator in project drools by kiegroup.
the class MVELAccumulateBuilder method buildCustomAccumulate.
private Accumulator[] buildCustomAccumulate(final RuleBuildContext context, final AccumulateDescr accumDescr, MVELDialect dialect, Map<String, Declaration> decls, Map<String, Declaration> sourceOuterDeclr, BoundIdentifiers boundIds, boolean readLocalsFromTuple) {
Accumulator[] accumulators;
final MVELAnalysisResult initCodeAnalysis = (MVELAnalysisResult) dialect.analyzeBlock(context, accumDescr, accumDescr.getInitCode(), boundIds);
// need to copy boundIds, as this as a "this" object.
final MVELAnalysisResult actionCodeAnalysis = (MVELAnalysisResult) dialect.analyzeBlock(context, accumDescr.getActionCode(), boundIds, initCodeAnalysis.getMvelVariables(), "drools", KnowledgeHelper.class);
final MVELAnalysisResult resultCodeAnalysis = (MVELAnalysisResult) dialect.analyzeExpression(context, accumDescr, accumDescr.getResultCode(), boundIds, initCodeAnalysis.getMvelVariables());
context.setTypesafe(initCodeAnalysis.isTypesafe());
MVELCompilationUnit initUnit = dialect.getMVELCompilationUnit(accumDescr.getInitCode(), initCodeAnalysis, getUsedDeclarations(decls, initCodeAnalysis), getUsedDeclarations(sourceOuterDeclr, initCodeAnalysis), initCodeAnalysis.getMvelVariables(), context, "drools", KnowledgeHelper.class, readLocalsFromTuple, MVELCompilationUnit.Scope.CONSTRAINT);
context.setTypesafe(actionCodeAnalysis.isTypesafe());
MVELCompilationUnit actionUnit = dialect.getMVELCompilationUnit(accumDescr.getActionCode(), actionCodeAnalysis, getUsedDeclarations(decls, actionCodeAnalysis), getUsedDeclarations(sourceOuterDeclr, actionCodeAnalysis), initCodeAnalysis.getMvelVariables(), context, "drools", KnowledgeHelper.class, readLocalsFromTuple, MVELCompilationUnit.Scope.CONSTRAINT);
MVELCompilationUnit reverseUnit = null;
if (accumDescr.getReverseCode() != null) {
context.setTypesafe(actionCodeAnalysis.isTypesafe());
reverseUnit = dialect.getMVELCompilationUnit(accumDescr.getReverseCode(), actionCodeAnalysis, getUsedDeclarations(decls, actionCodeAnalysis), getUsedDeclarations(sourceOuterDeclr, actionCodeAnalysis), initCodeAnalysis.getMvelVariables(), context, "drools", KnowledgeHelper.class, readLocalsFromTuple, MVELCompilationUnit.Scope.CONSTRAINT);
}
context.setTypesafe(resultCodeAnalysis.isTypesafe());
MVELCompilationUnit resultUnit = dialect.getMVELCompilationUnit(accumDescr.getResultCode(), resultCodeAnalysis, getUsedDeclarations(decls, resultCodeAnalysis), getUsedDeclarations(sourceOuterDeclr, resultCodeAnalysis), initCodeAnalysis.getMvelVariables(), context, "drools", KnowledgeHelper.class, readLocalsFromTuple, MVELCompilationUnit.Scope.CONSTRAINT);
accumulators = new Accumulator[] { new MVELAccumulator(initUnit, actionUnit, reverseUnit, resultUnit) };
return accumulators;
}
use of org.drools.core.spi.MvelAccumulator in project drools by kiegroup.
the class MVELAccumulateBuilder method build.
@SuppressWarnings("unchecked")
public RuleConditionElement build(final RuleBuildContext context, final BaseDescr descr, final Pattern prefixPattern) {
boolean typesafe = context.isTypesafe();
try {
final AccumulateDescr accumDescr = (AccumulateDescr) descr;
if (!accumDescr.hasValidInput()) {
return null;
}
final RuleConditionBuilder builder = (RuleConditionBuilder) context.getDialect().getBuilder(accumDescr.getInput().getClass());
// create source CE
final RuleConditionElement source = builder.build(context, accumDescr.getInput());
if (source == null) {
return null;
}
MVELDialect dialect = (MVELDialect) context.getDialect();
Map<String, Declaration> decls = context.getDeclarationResolver().getDeclarations(context.getRule());
Map<String, Declaration> sourceOuterDeclr = source.getOuterDeclarations();
Map<String, Class<?>> declarationClasses = DeclarationScopeResolver.getDeclarationClasses(decls);
declarationClasses.putAll(DeclarationScopeResolver.getDeclarationClasses(sourceOuterDeclr));
BoundIdentifiers boundIds = new BoundIdentifiers(declarationClasses, context);
final boolean readLocalsFromTuple = PackageBuilderUtil.isReadLocalsFromTuple(context, accumDescr, source);
Accumulator[] accumulators;
if (accumDescr.isExternalFunction()) {
// uses accumulate functions
accumulators = buildExternalFunctions(context, accumDescr, dialect, decls, sourceOuterDeclr, boundIds, readLocalsFromTuple, source, declarationClasses);
} else {
// it is a custom accumulate
accumulators = buildCustomAccumulate(context, accumDescr, dialect, decls, sourceOuterDeclr, boundIds, readLocalsFromTuple);
}
List<Declaration> requiredDeclarations = new ArrayList<Declaration>();
for (Accumulator acc : accumulators) {
MvelAccumulator mvelAcc = (MvelAccumulator) acc;
Collections.addAll(requiredDeclarations, mvelAcc.getRequiredDeclarations());
}
MVELDialectRuntimeData data = (MVELDialectRuntimeData) context.getPkg().getDialectRuntimeRegistry().getDialectData("mvel");
Accumulate accumulate;
if (accumDescr.isMultiFunction()) {
accumulate = new MultiAccumulate(source, requiredDeclarations.toArray(new Declaration[requiredDeclarations.size()]), accumulators, accumulators.length);
int index = 0;
for (Accumulator accumulator : accumulators) {
data.addCompileable(((MultiAccumulate) accumulate).new Wirer(index++), (MVELCompileable) accumulator);
((MVELCompileable) accumulator).compile(data, context.getRule());
}
} else {
accumulate = new SingleAccumulate(source, requiredDeclarations.toArray(new Declaration[requiredDeclarations.size()]), accumulators[0]);
data.addCompileable(((SingleAccumulate) accumulate).new Wirer(), (MVELCompileable) accumulators[0]);
((MVELCompileable) accumulators[0]).compile(data, context.getRule());
}
return accumulate;
} catch (Exception e) {
AsmUtil.copyErrorLocation(e, descr);
context.addError(new DescrBuildError(context.getParentDescr(), descr, e, "Unable to build expression for 'accumulate' : " + e.getMessage()));
return null;
} finally {
context.setTypesafe(typesafe);
}
}
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