org.geotools.filter.function
Class FilterFunction_strTrim2

Object
  extended by ExpressionAbstract
      extended by DefaultExpression
          extended by FunctionExpressionImpl
              extended by FilterFunction_strTrim2
All Implemented Interfaces:
Factory, ExpressionType, FunctionExpression, Expression, Function

public class FilterFunction_strTrim2
extends FunctionExpressionImpl

Function implementing the Symbology Encoding Trim function.

This function takes the following arguments:

  1. The string being trimmed
  2. The string to trim
  3. The trim direction, one of trailing, leading, both

Author:
Justin Deoliveira, OpenGeo

Field Summary
static FunctionName NAME
           
 
Fields inherited from class FunctionExpressionImpl
fallback, functionName, name, params
 
Fields inherited from class DefaultExpression
expressionType, permissiveConstruction
 
Fields inherited from interface ExpressionType
ATTRIBUTE, ATTRIBUTE_DOUBLE, ATTRIBUTE_GEOMETRY, ATTRIBUTE_INTEGER, ATTRIBUTE_STRING, ATTRIBUTE_UNDECLARED, FUNCTION, LITERAL_DOUBLE, LITERAL_GEOMETRY, LITERAL_INTEGER, LITERAL_LONG, LITERAL_STRING, LITERAL_UNDECLARED, MATH_ADD, MATH_DIVIDE, MATH_MULTIPLY, MATH_SUBTRACT
 
Fields inherited from interface Expression
NIL
 
Constructor Summary
FilterFunction_strTrim2()
           
 
Method Summary
 Object evaluate(Object object)
          This method checks if the object is an instance of Feature and if so, calls through to #evaluate(Feature).
 
Methods inherited from class FunctionExpressionImpl
accept, equals, functionName, getArgCount, getArgs, getExpression, getFallbackValue, getFunctionName, getImplementationHints, getName, getParameters, getType, setArgs, setFallbackValue, setName, setParameters, toString
 
Methods inherited from class DefaultExpression
accept, evaluate, getValue, isAttributeExpression, isExpression, isFunctionExpression, isGeometryExpression, isLiteralExpression, isMathExpression, isMathExpression
 
Methods inherited from class ExpressionAbstract
eval, eval, evaluate
 
Methods inherited from class Object
clone, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
 
Methods inherited from interface Expression
accept, evaluate, getValue
 
Methods inherited from interface Expression
evaluate
 

Field Detail

NAME

public static FunctionName NAME
Constructor Detail

FilterFunction_strTrim2

public FilterFunction_strTrim2()
Method Detail

evaluate

public Object evaluate(Object object)
Description copied from class: DefaultExpression
This method checks if the object is an instance of Feature and if so, calls through to #evaluate(Feature). This is done to maintain backwards compatability with previous version of Expression api which depended on Feature. If the object is not an instance of feature the super implementation is called.

Specified by:
evaluate in interface Expression
Overrides:
evaluate in class DefaultExpression


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