org.drools.mvel

Class MVELConstraintBuilder

java.lang.Object

org.drools.mvel.MVELConstraintBuilder

All Implemented Interfaces:

org.drools.compiler.rule.builder.ConstraintBuilder

public class MVELConstraintBuilder
extends Object
implements org.drools.compiler.rule.builder.ConstraintBuilder

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	MVELConstraintBuilder.BooleanConversionHandler
static class	MVELConstraintBuilder.Expression
static class	MVELConstraintBuilder.StringCoercionCompatibilityEvaluator

Nested classes/interfaces inherited from interface org.drools.compiler.rule.builder.ConstraintBuilder

org.drools.compiler.rule.builder.ConstraintBuilder.DummyConstraintBuilder, org.drools.compiler.rule.builder.ConstraintBuilder.Holder

Field Summary

Fields

Modifier and Type	Field and Description
protected static Set<String>	MVEL_OPERATORS
static boolean	USE_MVEL_EXPRESSION

Constructor Summary

Constructors

Constructor and Description
MVELConstraintBuilder()

Method Summary

Modifier and Type	Method and Description
org.drools.compiler.compiler.AnalysisResult	analyzeExpression(Class<?> thisClass, String expr)
org.drools.core.rule.QueryArgument	buildExpressionQueryArgument(org.drools.compiler.rule.builder.RuleBuildContext context, List<org.drools.core.rule.Declaration> declarations, String expression)
org.drools.core.spi.Constraint	buildLiteralConstraint(org.drools.compiler.rule.builder.RuleBuildContext context, org.drools.core.rule.Pattern pattern, org.drools.core.base.ValueType vtype, org.drools.core.spi.FieldValue field, String expression, String leftValue, String operator, boolean negated, String rightValue, org.drools.core.spi.InternalReadAccessor extractor, org.drools.compiler.lang.descr.LiteralRestrictionDescr restrictionDescr, Map<String,org.drools.compiler.lang.descr.OperatorDescr> aliases)
org.drools.core.spi.Evaluator	buildLiteralEvaluator(org.drools.compiler.rule.builder.RuleBuildContext context, org.drools.core.spi.InternalReadAccessor extractor, org.drools.compiler.lang.descr.LiteralRestrictionDescr literalRestrictionDescr, org.drools.core.base.ValueType vtype)
org.drools.core.spi.Constraint	buildMvelConstraint(String packageName, String expression, org.drools.core.rule.Declaration[] declarations, org.drools.core.base.EvaluatorWrapper[] operators, org.drools.compiler.rule.builder.RuleBuildContext context, org.drools.core.rule.Declaration[] previousDeclarations, org.drools.core.rule.Declaration[] localDeclarations, org.drools.compiler.lang.descr.PredicateDescr predicateDescr, org.drools.compiler.compiler.AnalysisResult analysis, boolean isDynamic)
org.drools.core.spi.InternalReadAccessor	buildMvelFieldReadAccessor(org.drools.compiler.rule.builder.RuleBuildContext context, org.drools.compiler.lang.descr.BaseDescr descr, org.drools.core.rule.Pattern pattern, org.drools.core.spi.ObjectType objectType, String fieldName, boolean reportError)
org.drools.core.time.TimerExpression	buildTimerExpression(String expression, ClassLoader classLoader, Map<String,org.drools.core.rule.Declaration> decls)
org.drools.core.time.TimerExpression	buildTimerExpression(String expression, org.drools.compiler.rule.builder.RuleBuildContext context)
org.drools.core.spi.Constraint	buildVariableConstraint(org.drools.compiler.rule.builder.RuleBuildContext context, org.drools.core.rule.Pattern pattern, String expression, org.drools.core.rule.Declaration[] declarations, String leftValue, org.drools.compiler.lang.descr.OperatorDescr operatorDescr, String rightValue, org.drools.core.spi.InternalReadAccessor extractor, org.drools.core.rule.Declaration requiredDeclaration, org.drools.compiler.lang.descr.RelationalExprDescr relDescr, Map<String,org.drools.compiler.lang.descr.OperatorDescr> aliases)
org.drools.compiler.compiler.DialectConfiguration	createJavaDialectConfiguration()
org.drools.compiler.kie.util.BeanCreator	createMVELBeanCreator(Map<String,Object> parameters)
org.drools.compiler.compiler.DialectConfiguration	createMVELDialectConfiguration()
org.drools.core.spi.Evaluator	getEvaluator(org.drools.compiler.rule.builder.RuleBuildContext context, org.drools.compiler.lang.descr.BaseDescr descr, org.drools.core.base.ValueType valueType, String evaluatorString, boolean isNegated, String parameters, org.drools.core.base.evaluators.EvaluatorDefinition.Target left, org.drools.core.base.evaluators.EvaluatorDefinition.Target right)
org.drools.core.spi.FieldValue	getMvelFieldValue(org.drools.compiler.rule.builder.RuleBuildContext context, org.drools.core.base.ValueType vtype, String value)
org.drools.core.base.evaluators.EvaluatorDefinition.Target	getRightTarget(org.drools.core.spi.InternalReadAccessor extractor)
boolean	isMvelOperator(String operator)
protected static String	normalizeMVELLiteralExpression(org.drools.core.base.ValueType vtype, org.drools.core.spi.FieldValue field, String expr, String leftValue, String operator, String rightValue, boolean negated, org.drools.compiler.lang.descr.LiteralRestrictionDescr restrictionDescr)
protected static String	normalizeMVELVariableExpression(String expr, String leftValue, String rightValue, org.drools.compiler.lang.descr.RelationalExprDescr relDescr)
protected static String	resolveUnificationAmbiguity(String expr, org.drools.core.rule.Declaration[] declrations, String leftValue, String rightValue)
void	setExprInputs(org.drools.compiler.rule.builder.RuleBuildContext context, org.drools.compiler.rule.builder.PatternBuilder.ExprBindings descrBranch, Class<?> thisClass, String expr)
boolean	useMvelExpression()
org.drools.core.base.EvaluatorWrapper	wrapEvaluator(org.drools.core.spi.Evaluator evaluator, org.drools.core.rule.Declaration left, org.drools.core.rule.Declaration right)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.drools.compiler.rule.builder.ConstraintBuilder

get

Field Detail

USE_MVEL_EXPRESSION

public static final boolean USE_MVEL_EXPRESSION

See Also:

Constant Field Values

MVEL_OPERATORS

protected static final Set<String> MVEL_OPERATORS

Constructor Detail

MVELConstraintBuilder

public MVELConstraintBuilder()

Method Detail

createJavaDialectConfiguration

public org.drools.compiler.compiler.DialectConfiguration createJavaDialectConfiguration()

Specified by:

createJavaDialectConfiguration in interface org.drools.compiler.rule.builder.ConstraintBuilder

createMVELDialectConfiguration

public org.drools.compiler.compiler.DialectConfiguration createMVELDialectConfiguration()

Specified by:

createMVELDialectConfiguration in interface org.drools.compiler.rule.builder.ConstraintBuilder

isMvelOperator

public boolean isMvelOperator(String operator)

Specified by:

isMvelOperator in interface org.drools.compiler.rule.builder.ConstraintBuilder

useMvelExpression

public boolean useMvelExpression()

buildVariableConstraint

public org.drools.core.spi.Constraint buildVariableConstraint(org.drools.compiler.rule.builder.RuleBuildContext context,
                                                              org.drools.core.rule.Pattern pattern,
                                                              String expression,
                                                              org.drools.core.rule.Declaration[] declarations,
                                                              String leftValue,
                                                              org.drools.compiler.lang.descr.OperatorDescr operatorDescr,
                                                              String rightValue,
                                                              org.drools.core.spi.InternalReadAccessor extractor,
                                                              org.drools.core.rule.Declaration requiredDeclaration,
                                                              org.drools.compiler.lang.descr.RelationalExprDescr relDescr,
                                                              Map<String,org.drools.compiler.lang.descr.OperatorDescr> aliases)

Specified by:

buildVariableConstraint in interface org.drools.compiler.rule.builder.ConstraintBuilder

buildMvelConstraint

public org.drools.core.spi.Constraint buildMvelConstraint(String packageName,
                                                          String expression,
                                                          org.drools.core.rule.Declaration[] declarations,
                                                          org.drools.core.base.EvaluatorWrapper[] operators,
                                                          org.drools.compiler.rule.builder.RuleBuildContext context,
                                                          org.drools.core.rule.Declaration[] previousDeclarations,
                                                          org.drools.core.rule.Declaration[] localDeclarations,
                                                          org.drools.compiler.lang.descr.PredicateDescr predicateDescr,
                                                          org.drools.compiler.compiler.AnalysisResult analysis,
                                                          boolean isDynamic)

Specified by:

buildMvelConstraint in interface org.drools.compiler.rule.builder.ConstraintBuilder

buildLiteralConstraint

public org.drools.core.spi.Constraint buildLiteralConstraint(org.drools.compiler.rule.builder.RuleBuildContext context,
                                                             org.drools.core.rule.Pattern pattern,
                                                             org.drools.core.base.ValueType vtype,
                                                             org.drools.core.spi.FieldValue field,
                                                             String expression,
                                                             String leftValue,
                                                             String operator,
                                                             boolean negated,
                                                             String rightValue,
                                                             org.drools.core.spi.InternalReadAccessor extractor,
                                                             org.drools.compiler.lang.descr.LiteralRestrictionDescr restrictionDescr,
                                                             Map<String,org.drools.compiler.lang.descr.OperatorDescr> aliases)

Specified by:

buildLiteralConstraint in interface org.drools.compiler.rule.builder.ConstraintBuilder

resolveUnificationAmbiguity

protected static String resolveUnificationAmbiguity(String expr,
                                                    org.drools.core.rule.Declaration[] declrations,
                                                    String leftValue,
                                                    String rightValue)

normalizeMVELLiteralExpression

protected static String normalizeMVELLiteralExpression(org.drools.core.base.ValueType vtype,
                                                       org.drools.core.spi.FieldValue field,
                                                       String expr,
                                                       String leftValue,
                                                       String operator,
                                                       String rightValue,
                                                       boolean negated,
                                                       org.drools.compiler.lang.descr.LiteralRestrictionDescr restrictionDescr)

normalizeMVELVariableExpression

protected static String normalizeMVELVariableExpression(String expr,
                                                        String leftValue,
                                                        String rightValue,
                                                        org.drools.compiler.lang.descr.RelationalExprDescr relDescr)

buildLiteralEvaluator

public org.drools.core.spi.Evaluator buildLiteralEvaluator(org.drools.compiler.rule.builder.RuleBuildContext context,
                                                           org.drools.core.spi.InternalReadAccessor extractor,
                                                           org.drools.compiler.lang.descr.LiteralRestrictionDescr literalRestrictionDescr,
                                                           org.drools.core.base.ValueType vtype)

Specified by:

buildLiteralEvaluator in interface org.drools.compiler.rule.builder.ConstraintBuilder

getRightTarget

public org.drools.core.base.evaluators.EvaluatorDefinition.Target getRightTarget(org.drools.core.spi.InternalReadAccessor extractor)

Specified by:

getRightTarget in interface org.drools.compiler.rule.builder.ConstraintBuilder

getEvaluator

public org.drools.core.spi.Evaluator getEvaluator(org.drools.compiler.rule.builder.RuleBuildContext context,
                                                  org.drools.compiler.lang.descr.BaseDescr descr,
                                                  org.drools.core.base.ValueType valueType,
                                                  String evaluatorString,
                                                  boolean isNegated,
                                                  String parameters,
                                                  org.drools.core.base.evaluators.EvaluatorDefinition.Target left,
                                                  org.drools.core.base.evaluators.EvaluatorDefinition.Target right)

Specified by:

getEvaluator in interface org.drools.compiler.rule.builder.ConstraintBuilder

wrapEvaluator

public org.drools.core.base.EvaluatorWrapper wrapEvaluator(org.drools.core.spi.Evaluator evaluator,
                                                           org.drools.core.rule.Declaration left,
                                                           org.drools.core.rule.Declaration right)

Specified by:

wrapEvaluator in interface org.drools.compiler.rule.builder.ConstraintBuilder

buildTimerExpression

public org.drools.core.time.TimerExpression buildTimerExpression(String expression,
                                                                 org.drools.compiler.rule.builder.RuleBuildContext context)

Specified by:

buildTimerExpression in interface org.drools.compiler.rule.builder.ConstraintBuilder

buildTimerExpression

public org.drools.core.time.TimerExpression buildTimerExpression(String expression,
                                                                 ClassLoader classLoader,
                                                                 Map<String,org.drools.core.rule.Declaration> decls)

Specified by:

buildTimerExpression in interface org.drools.compiler.rule.builder.ConstraintBuilder

analyzeExpression

public org.drools.compiler.compiler.AnalysisResult analyzeExpression(Class<?> thisClass,
                                                                     String expr)

Specified by:

analyzeExpression in interface org.drools.compiler.rule.builder.ConstraintBuilder

buildMvelFieldReadAccessor

public org.drools.core.spi.InternalReadAccessor buildMvelFieldReadAccessor(org.drools.compiler.rule.builder.RuleBuildContext context,
                                                                           org.drools.compiler.lang.descr.BaseDescr descr,
                                                                           org.drools.core.rule.Pattern pattern,
                                                                           org.drools.core.spi.ObjectType objectType,
                                                                           String fieldName,
                                                                           boolean reportError)

Specified by:

buildMvelFieldReadAccessor in interface org.drools.compiler.rule.builder.ConstraintBuilder

setExprInputs

public void setExprInputs(org.drools.compiler.rule.builder.RuleBuildContext context,
                          org.drools.compiler.rule.builder.PatternBuilder.ExprBindings descrBranch,
                          Class<?> thisClass,
                          String expr)

Specified by:

setExprInputs in interface org.drools.compiler.rule.builder.ConstraintBuilder

getMvelFieldValue

public org.drools.core.spi.FieldValue getMvelFieldValue(org.drools.compiler.rule.builder.RuleBuildContext context,
                                                        org.drools.core.base.ValueType vtype,
                                                        String value)

Specified by:

getMvelFieldValue in interface org.drools.compiler.rule.builder.ConstraintBuilder

buildExpressionQueryArgument

public org.drools.core.rule.QueryArgument buildExpressionQueryArgument(org.drools.compiler.rule.builder.RuleBuildContext context,
                                                                       List<org.drools.core.rule.Declaration> declarations,
                                                                       String expression)

Specified by:

buildExpressionQueryArgument in interface org.drools.compiler.rule.builder.ConstraintBuilder

createMVELBeanCreator

public org.drools.compiler.kie.util.BeanCreator createMVELBeanCreator(Map<String,Object> parameters)

Specified by:

createMVELBeanCreator in interface org.drools.compiler.rule.builder.ConstraintBuilder