Xerces2-j 2.12.2 · org.apache.xerces.impl.dtd.models.SimpleContentModel

SimpleContentModel is a derivative of the abstract content model base class that handles a small set of simple content models that are just way overkill to give the DFA treatment.

This class handles the following scenarios:

These all involve a unary operation with one element type, or a binary operation with two elements. These are very simple and can be checked in a simple way without a DFA and without the overhead of setting up a DFA for such a simple check.

Field Summary

Modifier and Type	Field and Description
public static final short	CHOICE CHOICE
private final QName	fFirstChild The element decl pool indices of the first (and optional second) child node.
private final int	fOperator The operation that this object represents.
private final QName	fSecondChild The element decl pool indices of the first (and optional second) child node.
public static final short	SEQUENCE SEQUENCE

Constructor Summary

Access	Constructor and Description
public	SimpleContentModel(short The content model operator. operator, QName qualified name of the first child firstChild, QName qualified name of the second child secondChild) Constructs a simple content model.

Method Summary

Modifier and Type Method and Description

Modifier and Type	Method and Description
public int	Returns: The value -1 if fully valid, else the 0 based index of the child that first failed. If the value returned is equal to the number of children, then the specified children are valid but additional content is required to reach a valid ending state. validate(QName[] The children of this element. Each integer is an index within the `StringPool` of the child element name. An index of -1 is used to indicate an occurrence of non-whitespace character data. children, int Offset into the array where the children starts. offset, int The number of entries in the `children` array. length) Implements org.apache.xerces.impl.dtd.models.ContentModelValidator.validate. Check that the specified content is valid according to this content model.

public int

Returns:

The value -1 if fully valid, else the 0 based index of the child that first failed. If the value returned is equal to the number of children, then the specified children are valid but additional content is required to reach a valid ending state.

validate(QName[]

The children of this element. Each integer is an index within the StringPool of the child element name. An index of -1 is used to indicate an occurrence of non-whitespace character data.

children, int

Offset into the array where the children starts.

offset, int

The number of entries in the children array.

length)

Implements org.apache.xerces.impl.dtd.models.ContentModelValidator.validate.

Check that the specified content is valid according to this content model.

Inherited from java.lang.Object:: clone equals finalize getClass hashCode notify notifyAll toString wait wait wait

Field Detail

CHOICE	back to summary
public static final short CHOICE CHOICE

fFirstChild	back to summary
private final QName fFirstChild The element decl pool indices of the first (and optional second) child node. The operation code tells us whether the second child is used or not.

fOperator	back to summary
private final int fOperator The operation that this object represents. Since this class only does simple contents, there is only ever a single operation involved (i.e. the children of the operation are always one or two leafs.) This is one of the XMLDTDParams.CONTENTSPECNODE_XXX values.

fSecondChild	back to summary
private final QName fSecondChild The element decl pool indices of the first (and optional second) child node. The operation code tells us whether the second child is used or not.

SEQUENCE	back to summary
public static final short SEQUENCE SEQUENCE

Constructor Detail

SimpleContentModel	back to summary
public SimpleContentModel(short operator, QName firstChild, QName secondChild) Constructs a simple content model. Parameters operator:short The content model operator. firstChild:QName qualified name of the first child secondChild:QName qualified name of the second child

SimpleContentModel

back to summary

public SimpleContentModel(short operator, QName firstChild, QName secondChild)

Constructs a simple content model.

Parameters

operator:short: The content model operator.
firstChild:QName: qualified name of the first child
secondChild:QName: qualified name of the second child

Method Detail

validate back to summary

validate	back to summary
public int validate(QName[] children, int offset, int length) Implements org.apache.xerces.impl.dtd.models.ContentModelValidator.validate. Check that the specified content is valid according to this content model. This method can also be called to do 'what if' testing of content models just to see if they would be valid. A value of -1 in the children array indicates a PCDATA node. All other indexes will be positive and represent child elements. The count can be zero, since some elements have the EMPTY content model and that must be confirmed. Parameters children:QName[] The children of this element. Each integer is an index within the `StringPool` of the child element name. An index of -1 is used to indicate an occurrence of non-whitespace character data. offset:int Offset into the array where the children starts. length:int The number of entries in the `children` array. Returns:int The value -1 if fully valid, else the 0 based index of the child that first failed. If the value returned is equal to the number of children, then the specified children are valid but additional content is required to reach a valid ending state.

public int validate(QName[] children, int offset, int length)

Implements org.apache.xerces.impl.dtd.models.ContentModelValidator.validate.

Check that the specified content is valid according to this content model. This method can also be called to do 'what if' testing of content models just to see if they would be valid.

A value of -1 in the children array indicates a PCDATA node. All other indexes will be positive and represent child elements. The count can be zero, since some elements have the EMPTY content model and that must be confirmed.