org.deegree.filter.xml
Class Filter100XMLDecoder

java.lang.Object
  org.deegree.filter.xml.Filter100XMLDecoder

public class Filter100XMLDecoder
extends Object

Decodes XML fragments that comply to the OGC Filter Encoding Specification 1.0.0.

Version:

$Revision: 31664 $, $Date: 2011-08-26 16:18:07 +0200 (Fri, 26 Aug 2011) $

Author:

Markus Schneider, Andrei Ionita, last edited by: $Author: mschneider $

Constructor Summary

Filter100XMLDecoder()

Method Summary

static Filter	parse(XMLStreamReader xmlStream) Returns the object representation for the given wfs:Filter element event that the cursor of the associated XMLStreamReader points at.
static ComparisonOperator	parseComparisonOperator(XMLStreamReader xmlStream) Returns the object representation for the given ogc:comparisonOps element event that the cursor of the associated XMLStreamReader points at.
static CustomExpression	parseCustomExpression(XMLStreamReader xmlStream) Returns the object representation for the given custom ogc:expression element event that the cursor of the associated XMLStreamReader points at.
static Expression	parseExpression(XMLStreamReader xmlStream) Returns the object representation for the given ogc:expression element event that the cursor of the associated XMLStreamReader points at.
static Function	parseFunction(XMLStreamReader xmlStream) Returns the object representation for the given ogc:Function element event that the cursor of the associated XMLStreamReader points at.

Methods inherited from class java.lang.Object

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

Constructor Detail

Filter100XMLDecoder

public Filter100XMLDecoder()

Method Detail

parse

public static Filter parse(XMLStreamReader xmlStream)
                    throws XMLParsingException,
                           XMLStreamException

Returns the object representation for the given wfs:Filter element event that the cursor of the associated XMLStreamReader points at.

• Precondition: cursor must point at the START_ELEMENT event (<wfs:Filter>)
• Postcondition: cursor points at the corresponding END_ELEMENT event (</wfs:Filter>)

Parameters:

xmlStream - cursor must point at the START_ELEMENT event (<wfs:Filter>), points at the corresponding END_ELEMENT event (</wfs:Filter>) afterwards

Returns:

corresponding Filter object

Throws:

XMLParsingException - if the element is not a valid "wfs:Filter" element

XMLStreamException

parseExpression

public static Expression parseExpression(XMLStreamReader xmlStream)
                                  throws XMLStreamException

Returns the object representation for the given ogc:expression element event that the cursor of the associated XMLStreamReader points at.

The element must be one of the following:

• ogc:Add
• ogc:Sub
• ogc:Div
• ogc:Mul
• ogc:PropertyName
• ogc:Literal
• ogc:Function
• substitution for ogc:expression (handled by CustomExpression instance)

• Precondition: cursor must point at the START_ELEMENT event (<ogc:expression>)
• Postcondition: cursor points at the corresponding END_ELEMENT event (</ogc:expression>)

Parameters:

xmlStream - cursor must point at the START_ELEMENT event (<ogc:expression>), points at the corresponding END_ELEMENT event (</ogc:expression>) afterwards

Returns:

corresponding Expression object

Throws:

XMLParsingException - if the element is not a valid "ogc:expression" element

XMLStreamException

parseFunction

public static Function parseFunction(XMLStreamReader xmlStream)
                              throws XMLStreamException

Returns the object representation for the given ogc:Function element event that the cursor of the associated XMLStreamReader points at.

• Precondition: cursor must point at the START_ELEMENT event (<ogc:Function>)
• Postcondition: cursor points at the corresponding END_ELEMENT event (</ogc:Function>)

Parameters:

xmlStream - cursor must point at the START_ELEMENT event (<ogc:Function>), points at the corresponding END_ELEMENT event (</ogc:Function>) afterwards

Returns:

corresponding Function object

Throws:

XMLParsingException - if the element is not a valid "ogc:Function" element

XMLStreamException

parseCustomExpression

public static CustomExpression parseCustomExpression(XMLStreamReader xmlStream)
                                              throws XMLStreamException

Returns the object representation for the given custom ogc:expression element event that the cursor of the associated XMLStreamReader points at.

• Precondition: cursor must point at the START_ELEMENT event (<ogc:expression>)
• Postcondition: cursor points at the corresponding END_ELEMENT event (</ogc:expression>)

Parameters:

xmlStream - cursor must point at the START_ELEMENT event (<ogc:expression>), points at the corresponding END_ELEMENT event (</ogc:expression>) afterwards

Returns:

corresponding CustomExpression object

Throws:

XMLParsingException - if the element is not a known or valid custom "ogc:expression" element

XMLStreamException

parseComparisonOperator

public static ComparisonOperator parseComparisonOperator(XMLStreamReader xmlStream)
                                                  throws XMLStreamException

Returns the object representation for the given ogc:comparisonOps element event that the cursor of the associated XMLStreamReader points at.

The element must be one of the following:

• ogc:PropertyIsEqualTo
• ogc:PropertyIsGreaterThan
• ogc:PropertyIsGreaterThanOrEqualTo
• ogc:PropertyIsLessThan
• ogc:PropertyIsLessThanOrEqualTo
• ogc:PropertyIsNotEqualTo
• ogc:PropertyIsBetween
• ogc:PropertyIsLike
• ogc:PropertyIsNull

• Precondition: cursor must point at the START_ELEMENT event (<ogc:comparisonOps>)
• Postcondition: cursor points at the corresponding END_ELEMENT event (</ogc:comparisonOps>)

Parameters:

xmlStream - cursor must point at the START_ELEMENT event (<ogc:comparisonOps>), points at the corresponding END_ELEMENT event (</ogc:comparisonOps>) afterwards

Returns:

corresponding Expression object

Throws:

XMLParsingException - if the element is not a valid "ogc:comparisonOps" element

XMLStreamException