StringConcat Class

com.bea.p13n.expression.operator.string
StringConcat Class

public final class StringConcat

    extends StringOperator
    implements BinaryOperator

Implementation of the MathSubtract operator.
Input 1: A String (or Expression returning a String) that is LHS of the operator.
Input 2: A String (or Expression returning a String) that is RHS of the operator.
Returns: A String: LHS.concat( RHS ).


Hierarchy
Object
  ComplexExpressionImpl
    Operator
      StringOperator
        StringConcat
All Implemented Interfaces

BinaryOperator, Cloneable, Expression, Serializable

Field Summary

   
Fields from  com.bea.p13n.expression.operator.string.StringOperator
BINARY_PARAMETER_SIGNATURE, UNARY_PARAMETER_SIGNATURE
 
Fields from interface com.bea.p13n.expression.operator.BinaryOperator
LHS_INDEX, RHS_INDEX
 

Constructor Summary

StringConcat(Object lhs, Object rhs)

 

Method Summary

public Object
getLeftHandSide()
Returns left hand side operand of this binary operator.
public Class[]
getParameterSignature()
Returns the parameter signature for this Expression.
public Object
getRightHandSide()
Returns right hand side operand of this binary operator.
 
Methods from  com.bea.p13n.expression.operator.Operator
leftHandSide, operand, rightHandSide
 
Methods from  com.bea.p13n.expression.internal.ComplexExpressionImpl
addListener, addSubExpression, clearCache, clone, createProxyExpression, equals, getCachedValue, getParent, getSource, getSubExpression, getSubExpressionCount, getUserData, hashCode, isCached, isCacheEnabled, isEqualitySubExpression, notifyListeners, removeAllSubExpressions, removeListener, removeSubExpression, removeSubExpression, setCachedValue, setCacheEnabled, setParent, setSource, setSubExpression, setUserData, toString, write
 
Methods from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
   
Methods from interface com.bea.p13n.expression.operator.BinaryOperator
getLeftHandSide, getRightHandSide
 
Methods from interface com.bea.p13n.expression.Expression
accept, addListener, addSubExpression, clearCache, clone, getCachedValue, getParameterSignature, getParent, getSource, getSubExpression, getSubExpressionCount, getUserData, isCached, isCacheEnabled, removeAllSubExpressions, removeListener, removeSubExpression, removeSubExpression, setCachedValue, setCacheEnabled, setSource, setSubExpression, setUserData, write
 

Constructor Detail

StringConcat

public StringConcat(Object lhs, 
                    Object rhs)
 

Method Detail

getLeftHandSide() Method

public Object getLeftHandSide()
Description copied from BinaryOperator.getLeftHandSide()
Returns left hand side operand of this binary operator.

Returns

The left hand side operand.

getParameterSignature() Method

public Class[] getParameterSignature()
Description copied from Expression.getParameterSignature()
Returns the parameter signature for this Expression. Because the sub-expressions within the Expression are typically arguments or operands, some type validation is performed by examining the class types of the sub-expressions against the Expression's parameter signature.
The tests that are performed are:
1. The number of sub-expressions must equals the number of parameter entries.
2. The class type of any sub-expression (or the result of evaluating the sub-expresssion) must equal the class type of the corresponding parameter entry.
3. Any null parameter entries are ignored and are considered optional sub-expressions.

Returns

the Class array containing the parameter signature.

getRightHandSide() Method

public Object getRightHandSide()
Description copied from BinaryOperator.getRightHandSide()
Returns right hand side operand of this binary operator.

Returns

The left hand side operand.