org.drools.rule.builder
Class ConstraintBuilder

java.lang.Object
  org.drools.rule.builder.ConstraintBuilder

public class ConstraintBuilder
extends Object

Nested Class Summary

static class	ConstraintBuilder.BooleanConversionHandler
static class	ConstraintBuilder.StringCoercionCompatibilityEvaluator

Field Summary

static boolean

USE_MVEL_EXPRESSION

Constructor Summary

ConstraintBuilder()

Method Summary

static MVELCompilationUnit	buildCompilationUnit(RuleBuildContext context, Declaration[] previousDeclarations, Declaration[] localDeclarations, PredicateDescr predicateDescr, AnalysisResult analysis)
static MVELCompilationUnit	buildCompilationUnit(RuleBuildContext context, Pattern pattern, String expression)
static Constraint	buildLiteralConstraint(RuleBuildContext context, Pattern pattern, ValueType vtype, FieldValue field, String expression, String leftValue, String operator, String rightValue, InternalReadAccessor extractor, LiteralRestrictionDescr restrictionDescr)
static Evaluator	buildLiteralEvaluator(RuleBuildContext context, InternalReadAccessor extractor, LiteralRestrictionDescr literalRestrictionDescr, ValueType vtype)
static LiteralRestriction	buildLiteralRestriction(RuleBuildContext context, InternalReadAccessor extractor, LiteralRestrictionDescr literalRestrictionDescr, FieldValue field, ValueType vtype)
static Constraint	buildVariableConstraint(RuleBuildContext context, Pattern pattern, String expression, Declaration[] declarations, String leftValue, String operator, String rightValue, InternalReadAccessor extractor, Restriction restriction)
static Evaluator	getEvaluator(RuleBuildContext context, BaseDescr descr, ValueType valueType, String evaluatorString, boolean isNegated, String parameters, EvaluatorDefinition.Target left, EvaluatorDefinition.Target right)
static EvaluatorDefinition.Target	getRightTarget(InternalReadAccessor extractor)
static boolean	isMvelOperator(String operator)

Methods inherited from class java.lang.Object

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

Field Detail

USE_MVEL_EXPRESSION

public static final boolean USE_MVEL_EXPRESSION

See Also:

Constant Field Values

Constructor Detail

ConstraintBuilder

public ConstraintBuilder()

Method Detail

isMvelOperator

public static boolean isMvelOperator(String operator)

buildVariableConstraint

public static Constraint buildVariableConstraint(RuleBuildContext context,
                                                 Pattern pattern,
                                                 String expression,
                                                 Declaration[] declarations,
                                                 String leftValue,
                                                 String operator,
                                                 String rightValue,
                                                 InternalReadAccessor extractor,
                                                 Restriction restriction)

buildLiteralConstraint

public static Constraint buildLiteralConstraint(RuleBuildContext context,
                                                Pattern pattern,
                                                ValueType vtype,
                                                FieldValue field,
                                                String expression,
                                                String leftValue,
                                                String operator,
                                                String rightValue,
                                                InternalReadAccessor extractor,
                                                LiteralRestrictionDescr restrictionDescr)

buildLiteralRestriction

public static LiteralRestriction buildLiteralRestriction(RuleBuildContext context,
                                                         InternalReadAccessor extractor,
                                                         LiteralRestrictionDescr literalRestrictionDescr,
                                                         FieldValue field,
                                                         ValueType vtype)

buildLiteralEvaluator

public static Evaluator buildLiteralEvaluator(RuleBuildContext context,
                                              InternalReadAccessor extractor,
                                              LiteralRestrictionDescr literalRestrictionDescr,
                                              ValueType vtype)

getRightTarget

public static EvaluatorDefinition.Target getRightTarget(InternalReadAccessor extractor)

getEvaluator

public static Evaluator getEvaluator(RuleBuildContext context,
                                     BaseDescr descr,
                                     ValueType valueType,
                                     String evaluatorString,
                                     boolean isNegated,
                                     String parameters,
                                     EvaluatorDefinition.Target left,
                                     EvaluatorDefinition.Target right)

buildCompilationUnit

public static MVELCompilationUnit buildCompilationUnit(RuleBuildContext context,
                                                       Pattern pattern,
                                                       String expression)

buildCompilationUnit

public static MVELCompilationUnit buildCompilationUnit(RuleBuildContext context,
                                                       Declaration[] previousDeclarations,
                                                       Declaration[] localDeclarations,
                                                       PredicateDescr predicateDescr,
                                                       AnalysisResult analysis)