org.opengis.sld
Interface SLDVisitor

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public interface SLDVisitor

An interface for classes that want to perform operations on a SLD hierarchy. It forms part of a GoF Visitor Pattern implementation.

A call to sld.accept(SLDVisitor) will result in a call to one of the methods in this interface. The responsibility for traversing sub filters is intended to lie with the visitor (this is unusual, but permitted under the Visitor pattern).

A typical use would be to transcribe a sld into a specific format, e.g. XML or SQL. Alternatively it may be to extract specific information from the SLD structure, for example a list of all fills. Finally a a sld visitor is often used (in conjunction with a factory) in the production of a copy; or slightly modified copy of the original sld.

It is common practice for a SLDVisitor to also implement a StyleVisitor and ExpressionVisitor in order to traverse all data structures.

Since:

GeoAPI 2.2

See Also:

ExpressionVisitor, StyleVisitor, StyleFactory

Method Summary

Object	visit(CoverageConstraint constraint, Object data) Called when accept is called on a coverage constraint.
Object	visit(CoverageExtent extent, Object data) Called when accept is called on a coverage extent.
Object	visit(Extent extent, Object data) Called when accept is called on a feature extent.
Object	visit(FeatureTypeConstraint constraint, Object data) Called when accept is called on a featrure constraint.
Object	visit(InlineFeature inline, Object data) Called when accept is called on an InlineFeature.
Object	visit(LayerCoverageConstraints constraints, Object data) Called when accept is called on a layer coverage constraints.
Object	visit(LayerFeatureConstraints constraints, Object data) Called when accept is called on a layer feature constraints.
Object	visit(NamedLayer layer, Object data) Called when accept is called on a named layer.
Object	visit(NamedStyle style, Object data) Called when accept is called on a named style.
Object	visit(RangeAxis axi, Object data) Called when accept is called on a range axis.
Object	visit(RemoteOWS ows, Object data) Called when accept is called on a remoteOWS.
Object	visit(SLDLibrary library, Object data) Called when accept is called on a SLDLibrary.
Object	visit(StyledLayerDescriptor sld, Object data) Called when accept is called on a StyledLayerDescriptor.
Object	visit(Style style, Object data) Called when accept is called on a user style.
Object	visit(UserLayer layer, Object data) Called when accept is called on a user layer.

Method Detail

visit

Object visit(StyledLayerDescriptor sld,
             Object data)

Called when accept is called on a StyledLayerDescriptor.

Parameters:

sld - The style layer descriptor to visit

visit

Object visit(SLDLibrary library,
             Object data)

Called when accept is called on a SLDLibrary.

Parameters:

library - The SLD library to visit

visit

Object visit(NamedLayer layer,
             Object data)

Called when accept is called on a named layer.

Parameters:

layer - The named layer to visit

visit

Object visit(UserLayer layer,
             Object data)

Called when accept is called on a user layer.

Parameters:

layer - The user layer to visit

visit

Object visit(NamedStyle style,
             Object data)

Called when accept is called on a named style.

Parameters:

style - The named style to visit

visit

Object visit(Style style,
             Object data)

Called when accept is called on a user style.

Parameters:

style - The user style to visit

visit

Object visit(LayerCoverageConstraints constraints,
             Object data)

Called when accept is called on a layer coverage constraints.

Parameters:

constraints - The layer coverage constraints to visit

visit

Object visit(LayerFeatureConstraints constraints,
             Object data)

Called when accept is called on a layer feature constraints.

Parameters:

constraints - The layer feature constraints to visit

visit

Object visit(CoverageConstraint constraint,
             Object data)

Called when accept is called on a coverage constraint.

Parameters:

constraint - The coverage constraint to visit

visit

Object visit(FeatureTypeConstraint constraint,
             Object data)

Called when accept is called on a featrure constraint.

Parameters:

constraint - The feature constraint to visit

visit

Object visit(CoverageExtent extent,
             Object data)

Called when accept is called on a coverage extent.

Parameters:

extent - The coverage extent to visit

visit

Object visit(Extent extent,
             Object data)

Called when accept is called on a feature extent.

Parameters:

extent - The feature extent to visit

visit

Object visit(RangeAxis axi,
             Object data)

Called when accept is called on a range axis.

Parameters:

axi - The range axi to visit

visit

Object visit(RemoteOWS ows,
             Object data)

Called when accept is called on a remoteOWS.

Parameters:

ows - The remoteOWS to visit

visit

Object visit(InlineFeature inline,
             Object data)

Called when accept is called on an InlineFeature.

Parameters:

inline - The InlineFeature to visit