org.xorm.query
Class ExpressionValidator

java.lang.Object
  |
  +--org.xorm.query.ExpressionVisitor.NoOp
        |
        +--org.xorm.query.ExpressionValidator

All Implemented Interfaces:

ExpressionVisitor

public class ExpressionValidator

extends ExpressionVisitor.NoOp

Validates and normalizes expressions.

Nested Class Summary

Nested classes inherited from class org.xorm.query.ExpressionVisitor

ExpressionVisitor.NoOp

Constructor Summary

ExpressionValidator(QueryImpl query)

Method Summary

boolean	isValid()
boolean	visitComparison(Expression.Comparison exp) Ensures that both sides of a comparison are valid.
boolean	visitFieldAccess(Expression.FieldAccess exp) Ensures that the field is mapped for the owning class and sets the Type field to the correct class.
boolean	visitMethodCall(Expression.MethodCall exp) Ensures that the method is acceptable as per the JDO spec.
boolean	visitNot(Expression.Not exp)
boolean	visitParameter(Expression.Parameter exp) Ensures that the named parameter has been declared.
boolean	visitUnary(Expression.Unary exp)
boolean	visitVariable(Expression.Variable exp) Ensures that the named variable has been declared.

Methods inherited from class org.xorm.query.ExpressionVisitor.NoOp

visitAnd, visitConditionalAnd, visitConditionalOr, visitConstant

Methods inherited from class java.lang.Object

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

Constructor Detail

ExpressionValidator

public ExpressionValidator(QueryImpl query)

Method Detail

isValid

public boolean isValid()

visitComparison

public boolean visitComparison(Expression.Comparison exp)

Ensures that both sides of a comparison are valid.

Specified by:

visitComparison in interface ExpressionVisitor

Overrides:

visitComparison in class ExpressionVisitor.NoOp

visitMethodCall

public boolean visitMethodCall(Expression.MethodCall exp)

Ensures that the method is acceptable as per the JDO spec.

Specified by:

visitMethodCall in interface ExpressionVisitor

Overrides:

visitMethodCall in class ExpressionVisitor.NoOp

visitFieldAccess

public boolean visitFieldAccess(Expression.FieldAccess exp)

Ensures that the field is mapped for the owning class and sets the Type field to the correct class.

Specified by:

visitFieldAccess in interface ExpressionVisitor

Overrides:

visitFieldAccess in class ExpressionVisitor.NoOp

visitParameter

public boolean visitParameter(Expression.Parameter exp)

Ensures that the named parameter has been declared.

Specified by:

visitParameter in interface ExpressionVisitor

Overrides:

visitParameter in class ExpressionVisitor.NoOp

visitVariable

public boolean visitVariable(Expression.Variable exp)

Ensures that the named variable has been declared.

Specified by:

visitVariable in interface ExpressionVisitor

Overrides:

visitVariable in class ExpressionVisitor.NoOp

visitNot

public boolean visitNot(Expression.Not exp)

Specified by:

visitNot in interface ExpressionVisitor

Overrides:

visitNot in class ExpressionVisitor.NoOp

visitUnary

public boolean visitUnary(Expression.Unary exp)

Specified by:

visitUnary in interface ExpressionVisitor

Overrides:

visitUnary in class ExpressionVisitor.NoOp