| java.lang.Object
 org.apache.xerces.validators.common.DFAContentModel
| DFAContentModel | | public class DFAContentModel implements XMLContentModel(Code) | | DFAContentModel is the derivative of ContentModel that does
all of the non-trivial element content validation. This class does
the conversion from the regular expression to the DFA that
it then uses in its validation algorithm.
version:
$Id: DFAContentModel.java,v 1.32 2001/06/20 20:54:37 neilg Exp $ |
| Constructor Summary | |
| public | DFAContentModel(CMNode syntaxTree, int leafCount)
Constructs a DFA content model. | | public | DFAContentModel(CMNode syntaxTree, int leafCount, boolean dtd, boolean mixed)
Constructs a DFA content model. |
| DFAContentModel | | public DFAContentModel(CMNode syntaxTree, int leafCount) throws CMException(Code) | | Constructs a DFA content model.
Parameters:
stringPool - The string pool.
Parameters:
syntaxTree - The syntax tree of the content model.
Parameters:
leafCount - The number of leaves.
exception:
CMException - Thrown if DMA can't be built. |
| DFAContentModel | | public DFAContentModel(CMNode syntaxTree, int leafCount, boolean dtd, boolean mixed) throws CMException(Code) | | Constructs a DFA content model.
Parameters:
stringPool - The string pool.
Parameters:
syntaxTree - The syntax tree of the content model.
Parameters:
leafCount - The number of leaves.
exception:
CMException - Thrown if DMA can't be built. |
| isFinalState | | public boolean isFinalState(int state)(Code) | | check whether the given state is one of the final states
Parameters:
state - the state to check whether it's a final state |
| oneTransition | | public int oneTransition(QName curElem, int[] stateStack, int curPos) throws Exception(Code) | | one transition only
Parameters:
curElem - The current element's QName
Parameters:
stateStack - stack to store the previous state
Parameters:
curPos - the current position of the stack The value -1 if not valid, otherwise the index of the matching leaf
exception:
CMException - Thrown on error. |
| validateContent | | public int validateContent(QName children, int offset, int length) throws CMException(Code) | | 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 - The children of this element. Each integer is an index withinthe StringPool of the child element name. An indexof -1 is used to indicate an occurrence of non-whitespace characterdata.
Parameters:
offset - Offset into the array where the children starts.
Parameters:
length - The number of entries in the children array. The value -1 if fully valid, else the 0 based index of the childthat first failed. If the value returned is equal to the numberof children, then the specified children are valid but additionalcontent is required to reach a valid ending state.
exception:
CMException - Thrown on error. |
| validateContentSpecial | | public int validateContentSpecial(QName children, int offset, int length) throws Exception(Code) | | |
| whatCanGoHere | | public int whatCanGoHere(boolean fullyValid, InsertableElementsInfo info) throws CMException(Code) | | Returns information about which elements can be placed at a particular point
in the passed element's content model.
Note that the incoming content model to test must be valid at least up to
the insertion point. If not, then -1 will be returned and the info object
will not have been filled in.
If, on return, the info.isValidEOC flag is set, then the 'insert after'
element is a valid end of content. In other words, nothing needs to be
inserted after it to make the parent element's content model valid.
Parameters:
fullyValid - Only return elements that can be inserted and stillmaintain the validity of subsequent elements past theinsertion point (if any). If the insertion point is atthe end, and this is true, then only elements that canbe legal final states will be returned.
Parameters:
info - An object that contains the required input data for the method,and which will contain the output information if successful. The value -1 if fully valid, else the 0 based index of the childthat first failed before the insertion point. If the valuereturned is equal to the number of children, then the specifiedchildren are valid but additional content is required to reach avalid ending state.
See Also: InsertableElementsInfo |
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