Package org.geotools.sld.bindings

Class SLDParameterValueTypeBinding

Object

AbstractComplexBinding

SLDParameterValueTypeBinding

All Implemented Interfaces:

Binding, ComplexBinding

Direct Known Subclasses:

ParameterValueTypeBinding

public class SLDParameterValueTypeBinding
extends AbstractComplexBinding

Binding object for the type http://www.opengis.net/sld:ParameterValueType.

         
  <xsd:complexType name="ParameterValueType" mixed="true">
      <xsd:annotation>
          <xsd:documentation>         The "ParameterValueType"
              uses WFS-Filter expressions to give         values for SLD
              graphic parameters.  A "mixed" element-content
              model is used with textual substitution for values.       </xsd:documentation>
      </xsd:annotation>
      <xsd:sequence minOccurs="0" maxOccurs="unbounded">
          <xsd:element ref="ogc:expression"/>
      </xsd:sequence>
  </xsd:complexType>

          
         

Field Summary

Fields inherited from interface Binding

AFTER, BEFORE, OVERRIDE

Constructor Summary

Constructors

Constructor	Description
SLDParameterValueTypeBinding(FilterFactory filterFactory)

Method Summary

Modifier and Type	Method	Description
int	getExecutionMode()
QName	getTarget()
Class	getType()
void	initialize(ElementInstance instance, Node node, MutablePicoContainer context)
Object	parse(ElementInstance instance, Node node, Object value)	Even though the spec allows an instance of ParamterValueType to have multiple expressions as children, it is more often that there is only one.

Methods inherited from class AbstractComplexBinding

encode, getProperties, getProperty, initializeChildContext

Methods inherited from class Object

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

Constructor Detail

SLDParameterValueTypeBinding

public SLDParameterValueTypeBinding(FilterFactory filterFactory)

Method Detail

getTarget

public QName getTarget()

Returns:

The qualified name of the target for the binding.

getExecutionMode

public int getExecutionMode()

Specified by:

getExecutionMode in interface Binding

Overrides:

getExecutionMode in class AbstractComplexBinding

Returns:

The execution mode of the binding, one of the constants AFTER, BEFORE, or OVERRIDE.

See Also:

Binding.AFTER, Binding.BEFORE, Binding.OVERRIDE

getType

public Class getType()

Returns:

The java type this binding maps to.

initialize

public void initialize(ElementInstance instance,
                       Node node,
                       MutablePicoContainer context)

Specified by:

initialize in interface ComplexBinding

Overrides:

initialize in class AbstractComplexBinding

Parameters:

instance - The element being parsed.

node - The node in the parse tree representing the element being parsed. It is important to note that at the time this method is called the node contains no child element nodes, only child attribute nodes.

context - The container to be used as context for child binding.

parse

public Object parse(ElementInstance instance,
                    Node node,
                    Object value)
             throws Exception

Even though the spec allows an instance of ParamterValueType to have multiple expressions as children, it is more often that there is only one. Therefore this binding returns the first expression it finds or null. If a subtype needs multiple expressions they should ovveride.

Specified by:

parse in interface ComplexBinding

Overrides:

parse in class AbstractComplexBinding

Parameters:

instance - The element being parsed.

node - The node in the parse tree representing the element being parsed.

value - The result of the parse from another strategy in the type hierarchy. Could be null if this is the first strategy being executed.

Returns:

The parsed object, or null if the component could not be parsed.

Throws:

Exception - Strategy objects should not attempt to handle any exceptions.