jrun.ejb.ejbql
Class NavigationOperator

java.lang.Object
  |
  +--jrun.ejb.ejbql.OperatorBase
        |
        +--jrun.ejb.ejbql.UnaryOperator
              |
              +--jrun.ejb.ejbql.NavigationOperator

All Implemented Interfaces:

Element, Operator

public abstract class NavigationOperator

extends UnaryOperator

A special kind of unary operator that operates on expressions in a navigation expression.

Author:

Enrique Duvos

Field Summary

static NavigationOperator	CMP_OP
static NavigationOperator	CMR_OP

Fields inherited from class jrun.ejb.ejbql.UnaryOperator

ABS, ESCAPE, IS_EMPTY, IS_NOT_EMPTY, IS_NOT_NULL, IS_NULL, LENGTH, MINUS, NOT, PLUS, SELECT_ALL, SQRT

Fields inherited from class jrun.ejb.ejbql.OperatorBase

BOOLEAN_OBJECT_TYPE_NAME, BOOLEAN_PRIMITIVE_TYPE_NAME, DOUBLE_OBJECT_TYPE_NAME, DOUBLE_PRIMITIVE_TYPE_NAME, FLOAT_OBJECT_TYPE_NAME, FLOAT_PRIMITIVE_TYPE_NAME, INTEGER_OBJECT_TYPE_NAME, INTEGER_PRIMITIVE_TYPE_NAME, LONG_OBJECT_TYPE_NAME, LONG_PRIMITIVE_TYPE_NAME, STRING_TYPE_NAME

Fields inherited from interface jrun.ejb.ejbql.Element

UNSPECIFIED_TRAVERSAL_ORDER

Constructor Summary

protected	NavigationOperator()
protected	NavigationOperator(boolean preOperator)

Method Summary

java.lang.String	getResultType(Expression expression)
boolean	operatesOn(Expression expression)

Methods inherited from class jrun.ejb.ejbql.UnaryOperator

getPrintString, getPrintStrings, getResultType, isPostOperator, isPreOperator, isUnary, operatesOn

Methods inherited from class jrun.ejb.ejbql.OperatorBase

accept, acceptOperatorExpression, equals, getChildren, hasBooleanType, hasDoubleType, hasFloatType, hasIntegerType, hasLongType, hasNumericType, hasSmallerNumericType, hasStringType, isBinary, isFunction, isNary

Methods inherited from class java.lang.Object

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

Field Detail

CMP_OP

public static final NavigationOperator CMP_OP

CMR_OP

public static final NavigationOperator CMR_OP

Constructor Detail

NavigationOperator

protected NavigationOperator(boolean preOperator)

NavigationOperator

protected NavigationOperator()

Method Detail

operatesOn

public boolean operatesOn(Expression expression)

Overrides:

operatesOn in class UnaryOperator

getResultType

public java.lang.String getResultType(Expression expression)

Overrides:

getResultType in class UnaryOperator