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SchemaNamespaceSupport.javaAPI DocJava SE 6 API4478Tue Jun 10 00:22:44 BST 2008com.sun.org.apache.xerces.internal.impl.xs

SchemaNamespaceSupport

public class SchemaNamespaceSupport extends NamespaceSupport
This class customizes the behaviour of the util.NamespaceSupport class in order to easily implement some features that we need for efficient schema handling. It will not be generally useful.
xerces.internal
author
Neil Graham, IBM
version
$Id: SchemaNamespaceSupport.java,v 1.2.6.1 2005/09/09 07:30:50 sunithareddy Exp $

Fields Summary
Constructors Summary
public SchemaNamespaceSupport()

        super();
    
public SchemaNamespaceSupport(SchemaNamespaceSupport nSupport)

        fNamespaceSize = nSupport.fNamespaceSize;
        if (fNamespace.length < fNamespaceSize)
            fNamespace = new String[fNamespaceSize];
        System.arraycopy(nSupport.fNamespace, 0, fNamespace, 0, fNamespaceSize);
        fCurrentContext = nSupport.fCurrentContext;
        if (fContext.length <= fCurrentContext)
            fContext = new int[fCurrentContext+1];
        System.arraycopy(nSupport.fContext, 0, fContext, 0, fCurrentContext+1);
    
Methods Summary
public java.lang.String[]getEffectiveLocalContext()
This method returns an array of Strings, as would be stored in a NamespaceSupport object. This array contains all declarations except those at the global level.

        // the trick here is to recognize that all local contexts
        // happen to start at fContext[3].
        // context 1: empty
        // context 2: decls for xml and xmlns;
        // context 3: decls on <xs:schema>: the global ones
        String[] returnVal = null;
        if (fCurrentContext >= 3) {
            int bottomLocalContext = fContext[3];
            int copyCount = fNamespaceSize - bottomLocalContext;
            if (copyCount > 0) {
                returnVal = new String[copyCount];
                System.arraycopy(fNamespace, bottomLocalContext, returnVal, 0,
                                 copyCount);
            }
        }
        return returnVal;
    
public voidmakeGlobal()

        if (fCurrentContext >= 3) {
            fCurrentContext = 3;
            fNamespaceSize = fContext[3];
        }
    
public voidsetEffectiveContext(java.lang.String[] namespaceDecls)
This method takes a set of Strings, as stored in a NamespaceSupport object, and "fools" the object into thinking that this is one unified context. This is meant to be used in conjunction with things like local elements, whose declarations may be deeply nested but which for all practical purposes may be regarded as being one level below the global element--at least with regard to namespace declarations. It's worth noting that the context from which the strings are being imported had better be using the same SymbolTable.

        if(namespaceDecls == null || namespaceDecls.length == 0) return;
        pushContext();
        int newSize = fNamespaceSize + namespaceDecls.length;
        if (fNamespace.length < newSize) {
            // expand namespace's size...
            String[] tempNSArray = new String[newSize];
            System.arraycopy(fNamespace, 0, tempNSArray, 0, fNamespace.length);
            fNamespace = tempNSArray;
        }
        System.arraycopy(namespaceDecls, 0, fNamespace, fNamespaceSize,
                         namespaceDecls.length);
        fNamespaceSize = newSize;