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org.enhydra.xml.xmlc.dom.generic
Class DOMBuilderGenerator  

java.lang.Object
  org.enhydra.xml.xmlc.dom.generic.DOMBuilderGenerator

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public class DOMBuilderGenerator

extends java.lang.Object

Class to generate code to build the document tree using only the W3C DOM interface. The document building code is generated in several functions to avoid the JVM limit on maximum method size. Since it is not possible to determine the amount of bytecode generate, a metic is defined called create-cost. A unit of create-cost is approximately the cost to create a node and append it to it's parent. The limit on create-cost is determined experimentally.

The following methods can be overridden to provide DOM implementation-specific code generation:

• genNodeCreate - Generates code to create a node.

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Nested Class Summary
private  class	DOMBuilderGenerator.BuildMethodGenerator           Class that represents a single subdocument building method.

 

Field Summary
protected static java.lang.String	DOCUMENT_ARG
private static java.lang.String	DOCUMENT_ELEMENT_VAR
private  org.enhydra.xml.xmlc.dom.AccessorGenerator	fAccessorGenerator           Generator of access methods, needed to generate access method initialization
private  BuildMethodMappings	fBuildMethodMappings           Object that determines where new methods will be created to prevent method overflow.
private  org.enhydra.xml.xmlc.codegen.JavaClass	fDocClass           Class being created.
private  org.w3c.dom.Document	fDocument           Source document.
private  java.lang.String	fDocumentArgClassName           Type of document argument of build methods.
private  org.enhydra.xml.xmlc.compiler.ElementTable	fElementTable           Table of element information.
private  int	fMaxCreateCostPerBuildMethod           Maximum creation-cost that a single build method can handle.
private  java.lang.String	fMethodName           Name of method to create.
private  NodeCreateGenerator	fNodeCreateGenerator           Object used to create DOM nodes.
private  boolean	fStaticMethods           Should the methods be static.
protected static java.lang.String	PARENT_NODE_ARG           Name of argument to method containing parent node.

 

Constructor Summary

DOMBuilderGenerator(java.lang.String methodName, org.w3c.dom.Document document, java.lang.String documentArgClassName, NodeCreateGenerator nodeCreateGenerator, org.enhydra.xml.xmlc.dom.AccessorGenerator accessorGenerator, org.enhydra.xml.xmlc.compiler.ElementTable elementTable, org.enhydra.xml.xmlc.codegen.JavaClass docClass, int maxCreateCostPerBuildMethod, boolean staticMethods)           Constructor.

 

Method Summary
void	createMethodCall(java.lang.String docVarName, org.enhydra.xml.xmlc.codegen.JavaCode body)           Create a call to the top level method that was generated.

 

Methods inherited from class java.lang.Object

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

 

Field Detail

PARENT_NODE_ARG

protected static final java.lang.String PARENT_NODE_ARG

Name of argument to method containing parent node.

See Also:

Constant Field Values

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DOCUMENT_ARG

protected static final java.lang.String DOCUMENT_ARG

See Also:

Constant Field Values

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DOCUMENT_ELEMENT_VAR

private static final java.lang.String DOCUMENT_ELEMENT_VAR

See Also:

Constant Field Values

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fMaxCreateCostPerBuildMethod

private int fMaxCreateCostPerBuildMethod

Maximum creation-cost that a single build method can handle.

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fDocumentArgClassName

private java.lang.String fDocumentArgClassName

Type of document argument of build methods. Allows derived DOMs to use a more specific argument type to avoid casting.

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fMethodName

private java.lang.String fMethodName

Name of method to create.

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fDocument

private org.w3c.dom.Document fDocument

Source document.

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fNodeCreateGenerator

private NodeCreateGenerator fNodeCreateGenerator

Object used to create DOM nodes.

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fElementTable

private org.enhydra.xml.xmlc.compiler.ElementTable fElementTable

Table of element information.

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fBuildMethodMappings

private BuildMethodMappings fBuildMethodMappings

Object that determines where new methods will be created to prevent method overflow.

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fDocClass

private org.enhydra.xml.xmlc.codegen.JavaClass fDocClass

Class being created.

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fAccessorGenerator

private org.enhydra.xml.xmlc.dom.AccessorGenerator fAccessorGenerator

Generator of access methods, needed to generate access method initialization

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fStaticMethods

private boolean fStaticMethods

Should the methods be static.

Constructor Detail

DOMBuilderGenerator

public DOMBuilderGenerator(java.lang.String methodName,
                           org.w3c.dom.Document document,
                           java.lang.String documentArgClassName,
                           NodeCreateGenerator nodeCreateGenerator,
                           org.enhydra.xml.xmlc.dom.AccessorGenerator accessorGenerator,
                           org.enhydra.xml.xmlc.compiler.ElementTable elementTable,
                           org.enhydra.xml.xmlc.codegen.JavaClass docClass,
                           int maxCreateCostPerBuildMethod,
                           boolean staticMethods)
                    throws org.enhydra.xml.xmlc.XMLCException

Constructor. Build the methods.

Method Detail

createMethodCall

public void createMethodCall(java.lang.String docVarName,
                             org.enhydra.xml.xmlc.codegen.JavaCode body)

Create a call to the top level method that was generated.

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Overview  Package   Class  Use  Deprecated  Index
Home >> All >> org >> enhydra >> xml >> xmlc >> dom >> [ generic overview ]	PREV CLASS  NEXT CLASS
SUMMARY:  JAVADOC |  SOURCE |  DOWNLOAD | NESTED | FIELD | CONSTR | METHOD	DETAIL: FIELD | CONSTR | METHOD

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