ariba.util.expr
Class AribaExprEvaluator

java.lang.Object
  ariba.util.fieldvalue.ExpressionEvaluator
      ariba.util.expr.AribaExprEvaluator

public class AribaExprEvaluator
extends ExpressionEvaluator

Factory for Expr-based expressions

Nested Class Summary

static class	AribaExprEvaluator.Expression
static class	AribaExprEvaluator.NodeVisitor

Constructor Summary

AribaExprEvaluator()

Method Summary

void	checkReturnType(Environment env, Expression expression, java.lang.String expectedType, java.lang.String containerType, boolean exactMatch, boolean skipForObjectType) Check the return type of the expression.
Expression	compile(Environment env, java.lang.String rootType, java.lang.String stringRepresentation)
Expression	compile(Environment env, java.lang.String rootType, java.lang.String fieldName, java.lang.String stringRepresentation)
Expression	compile(Environment env, java.lang.String rootType, java.lang.String expectedType, java.lang.String containerType, boolean exactMatch, java.lang.String stringRepresentation)
Expression	compile(Environment env, java.lang.String rootType, java.lang.String fieldName, java.lang.String expectedType, java.lang.String containerType, boolean exactMatch, java.lang.String stringRepresentation, java.util.List errorCollector)
Expression	compile(java.lang.String stringRepresentation) Creates, compiles and returns a new Expression based off the supplied stringRepresentation.
static TypeInfo	getTypeInfo(Expression expr)
static AribaExprEvaluator	instance()
Expression	parse(Environment env, java.lang.String stringRepresentation, java.util.List errorCollector) This method parses a string expression into an expression tree.
Expression	parse(java.lang.String stringRepresentation) This method parses a string expression into an expression tree.
void	typeCheck(Environment env, java.lang.String rootType, java.lang.String fieldName, Expression expression, java.lang.String expectedType, java.lang.String containerType, boolean exactMatch, java.util.List errorCollector)
static java.lang.Object	visitNodes(Node root, AribaExprEvaluator.NodeVisitor visitor)

Methods inherited from class ariba.util.fieldvalue.ExpressionEvaluator

evaluate, evaluate, getFieldPaths

Methods inherited from class java.lang.Object

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

Constructor Detail

AribaExprEvaluator

public AribaExprEvaluator()

Method Detail

instance

public static AribaExprEvaluator instance()

parse

public Expression parse(java.lang.String stringRepresentation)
                 throws ExpressionException

This method parses a string expression into an expression tree. This method should only be used for unit test. Use compile(String) instead.

Parameters:

stringRepresentation -

Returns:

an expression tree

Throws:

ExpressionException

parse

public Expression parse(Environment env,
                        java.lang.String stringRepresentation,
                        java.util.List errorCollector)
                 throws ExpressionException

This method parses a string expression into an expression tree. This method should only be used for unit test. Use compile(String) instead.

Parameters:

stringRepresentation -

Returns:

an expression tree

Throws:

ExpressionException

compile

public Expression compile(java.lang.String stringRepresentation)
                   throws ExpressionException

Description copied from class: ExpressionEvaluator

Creates, compiles and returns a new Expression based off the supplied stringRepresentation.

Specified by:

compile in class ExpressionEvaluator

Throws:

ExpressionException

compile

public Expression compile(Environment env,
                          java.lang.String rootType,
                          java.lang.String fieldName,
                          java.lang.String stringRepresentation)
                   throws ExpressionException

Throws:

ExpressionException

compile

public Expression compile(Environment env,
                          java.lang.String rootType,
                          java.lang.String fieldName,
                          java.lang.String expectedType,
                          java.lang.String containerType,
                          boolean exactMatch,
                          java.lang.String stringRepresentation,
                          java.util.List errorCollector)
                   throws ExpressionException

Throws:

ExpressionException

compile

public Expression compile(Environment env,
                          java.lang.String rootType,
                          java.lang.String stringRepresentation)
                   throws ExpressionException

Throws:

ExpressionException

compile

public Expression compile(Environment env,
                          java.lang.String rootType,
                          java.lang.String expectedType,
                          java.lang.String containerType,
                          boolean exactMatch,
                          java.lang.String stringRepresentation)
                   throws ExpressionException

Throws:

ExpressionException

typeCheck

public void typeCheck(Environment env,
                      java.lang.String rootType,
                      java.lang.String fieldName,
                      Expression expression,
                      java.lang.String expectedType,
                      java.lang.String containerType,
                      boolean exactMatch,
                      java.util.List errorCollector)
               throws ExpressionException

Throws:

ExpressionException

checkReturnType

public void checkReturnType(Environment env,
                            Expression expression,
                            java.lang.String expectedType,
                            java.lang.String containerType,
                            boolean exactMatch,
                            boolean skipForObjectType)

Check the return type of the expression.

Parameters:

env -

expression -

expectedType -

containerType -

exactMatch -

skipForObjectType -

getTypeInfo

public static TypeInfo getTypeInfo(Expression expr)

visitNodes

public static java.lang.Object visitNodes(Node root,
                                          AribaExprEvaluator.NodeVisitor visitor)