org.geotools.filter.function
Class FilterFunction_getY

java.lang.Object
  extended by org.geotools.filter.expression.ExpressionAbstract
      extended by org.geotools.filter.DefaultExpression
          extended by org.geotools.filter.FunctionExpressionImpl
              extended by org.geotools.filter.function.FilterFunction_getY
All Implemented Interfaces:
Factory, ExpressionType, FunctionExpression, org.opengis.filter.expression.Expression, org.opengis.filter.expression.Function

public class FilterFunction_getY
extends FunctionExpressionImpl
implements FunctionExpression


Field Summary
 
Fields inherited from class org.geotools.filter.FunctionExpressionImpl
fallback, name, params
 
Fields inherited from class org.geotools.filter.DefaultExpression
expressionType, permissiveConstruction
 
Fields inherited from interface org.geotools.filter.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 org.opengis.filter.expression.Expression
NIL
 
Constructor Summary
FilterFunction_getY()
           
 
Method Summary
 java.lang.Object evaluate(java.lang.Object feature)
          This method checks if the object is an instance of Feature and if so, calls through to #evaluate(Feature).
 int getArgCount()
          Gets the number of arguments that are set.
 
Methods inherited from class org.geotools.filter.FunctionExpressionImpl
accept, equals, getArgs, getExpression, getFallbackValue, getImplementationHints, getName, getParameters, getType, setArgs, setFallbackValue, setName, setParameters, toString
 
Methods inherited from class org.geotools.filter.DefaultExpression
accept, evaluate, getValue, isAttributeExpression, isExpression, isFunctionExpression, isGeometryExpression, isLiteralExpression, isMathExpression, isMathExpression
 
Methods inherited from class org.geotools.filter.expression.ExpressionAbstract
eval, eval, evaluate
 
Methods inherited from class java.lang.Object
clone, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
 
Methods inherited from interface org.geotools.filter.FunctionExpression
getArgs, getName, getType, setArgs, setParameters
 
Methods inherited from interface org.geotools.filter.Expression
accept, evaluate, getValue
 
Methods inherited from interface org.geotools.factory.Factory
getImplementationHints
 
Methods inherited from interface org.opengis.filter.expression.Function
getFallbackValue, getParameters
 
Methods inherited from interface org.opengis.filter.expression.Expression
accept, evaluate
 

Constructor Detail

FilterFunction_getY

public FilterFunction_getY()
Method Detail

getArgCount

public int getArgCount()
Description copied from class: FunctionExpressionImpl
Gets the number of arguments that are set.

Specified by:
getArgCount in interface FunctionExpression
Specified by:
getArgCount in class FunctionExpressionImpl
Returns:
the number of args.

evaluate

public java.lang.Object evaluate(java.lang.Object feature)
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 org.opengis.filter.expression.Expression
Overrides:
evaluate in class DefaultExpression


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