y.io.graphml.graph2d
Class PostprocessorOutputHandler

java.lang.Object
  y.io.graphml.output.AbstractOutputHandler
      y.io.graphml.graph2d.PostprocessorOutputHandler

All Implemented Interfaces:

EventListener, OutputHandler, OutputHandlerProvider

public class PostprocessorOutputHandler
extends AbstractOutputHandler

This output handler writes out a list of YModules and adds postprocessor instructions for them.

Field Summary

static Object

PROCESSORS_DPKEY DataProvider key for all registered postprocessors that should be written by this handler.

Constructor Summary

PostprocessorOutputHandler()

Method Summary

Collection	getKeyDefinitionAttributes() Returns all XML attributes of the key element.
WritePrecedence	getPrecedence() Gets the write precedence for the handler.
protected Object	getValue(GraphMLWriteContext context, Object key) Callback method that obtains the data for the given key.
void	writeKeyDefinitionContent(GraphMLWriteContext ctx) Writes the contents of the key definition.
protected void	writeValueCore(GraphMLWriteContext context, Object data) Core write that performs the actual writing of the data.

Methods inherited from class y.io.graphml.output.AbstractOutputHandler

addNameToKeyDefinition, addScopeToKeyDefinition, addTypeToKeyDefinition, addUriToKeyDefinition, getDataTagAttributes, getDefaultValue, getScope, getValidScopes, hasDefaultValueAssigned, isDefaultValue, isValidScope, isWriteKeyDefault, onQueryOutputHandler, setDefaultValue, setDefaultValueAssigned, setPrecedence, setScope, setValidScopes, setWriteKeyDefault, writeValue

Methods inherited from class java.lang.Object

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

Field Detail

PROCESSORS_DPKEY

public static final Object PROCESSORS_DPKEY

DataProvider key for all registered postprocessors that should be written by this handler.

Constructor Detail

PostprocessorOutputHandler

public PostprocessorOutputHandler()

Method Detail

getPrecedence

public WritePrecedence getPrecedence()

Description copied from class: AbstractOutputHandler

Gets the write precedence for the handler.

Specified by:

getPrecedence in interface OutputHandler

Overrides:

getPrecedence in class AbstractOutputHandler

Returns:

The write precedence.

See Also:

AbstractOutputHandler.setPrecedence(WritePrecedence)

getKeyDefinitionAttributes

public Collection getKeyDefinitionAttributes()

Description copied from class: AbstractOutputHandler

Returns all XML attributes of the key element.

Key scope, Key type, name and uri are added by the corresponding addXXXToKeDefinition methods and should be added here.

Specified by:

getKeyDefinitionAttributes in interface OutputHandler

Overrides:

getKeyDefinitionAttributes in class AbstractOutputHandler

Returns:

All attributes of the key element.

See Also:

AbstractOutputHandler.addNameToKeyDefinition(String), AbstractOutputHandler.addScopeToKeyDefinition(y.io.graphml.KeyScope), AbstractOutputHandler.addTypeToKeyDefinition(y.io.graphml.KeyType), AbstractOutputHandler.addUriToKeyDefinition(String)

writeKeyDefinitionContent

public void writeKeyDefinitionContent(GraphMLWriteContext ctx)

Description copied from class: AbstractOutputHandler

Writes the contents of the key definition.

Depending on whether AbstractOutputHandler.setWriteKeyDefault(boolean) is enabled and AbstractOutputHandler.hasDefaultValueAssigned() is true, this method will write the GraphML 'default' element and use AbstractOutputHandler.writeValueCore(y.io.graphml.output.GraphMLWriteContext,Object) to serialize the AbstractOutputHandler.getDefaultValue().

Specified by:

writeKeyDefinitionContent in interface OutputHandler

Overrides:

writeKeyDefinitionContent in class AbstractOutputHandler

Parameters:

ctx - The context.

writeValueCore

protected void writeValueCore(GraphMLWriteContext context,
                              Object data)

Description copied from class: AbstractOutputHandler

Core write that performs the actual writing of the data.

Specified by:

writeValueCore in class AbstractOutputHandler

Parameters:

context - The context.

data - The data.

getValue

protected Object getValue(GraphMLWriteContext context,
                          Object key)
                   throws GraphMLWriteException

Description copied from class: AbstractOutputHandler

Callback method that obtains the data for the given key.

Specified by:

getValue in class AbstractOutputHandler

Throws:

GraphMLWriteException

Parameters:

context - The context.

key - The key.

Returns:

The data that is associated with the key.