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package com.sun.org.apache.xerces.internal.impl.xs.traversers;
import com.sun.org.apache.xerces.internal.impl.xs.SchemaGrammar;
import com.sun.org.apache.xerces.internal.impl.xs.SchemaSymbols;
import com.sun.org.apache.xerces.internal.impl.xs.XSElementDecl;
import com.sun.org.apache.xerces.internal.impl.xs.identity.IdentityConstraint;
import com.sun.org.apache.xerces.internal.impl.xs.identity.KeyRef;
import com.sun.org.apache.xerces.internal.impl.xs.identity.UniqueOrKey;
import com.sun.org.apache.xerces.internal.xni.QName;
import org.w3c.dom.Element;
/**
* This class contains code that is used to traverse s.
*
* @xerces.internal
*
* @author Neil Graham, IBM
* @version $Id: XSDKeyrefTraverser.java,v 1.7 2010-11-01 04:40:02 joehw Exp $
*/
class XSDKeyrefTraverser extends XSDAbstractIDConstraintTraverser {
public XSDKeyrefTraverser (XSDHandler handler,
XSAttributeChecker gAttrCheck) {
super(handler, gAttrCheck);
}
void traverse(Element krElem, XSElementDecl element,
XSDocumentInfo schemaDoc, SchemaGrammar grammar) {
// General Attribute Checking
Object[] attrValues = fAttrChecker.checkAttributes(krElem, false, schemaDoc);
// create identity constraint
String krName = (String)attrValues[XSAttributeChecker.ATTIDX_NAME];
if(krName == null){
reportSchemaError("s4s-att-must-appear", new Object [] {SchemaSymbols.ELT_KEYREF , SchemaSymbols.ATT_NAME }, krElem);
//return this array back to pool
fAttrChecker.returnAttrArray(attrValues, schemaDoc);
return;
}
QName kName = (QName)attrValues[XSAttributeChecker.ATTIDX_REFER];
if(kName == null){
reportSchemaError("s4s-att-must-appear", new Object [] {SchemaSymbols.ELT_KEYREF , SchemaSymbols.ATT_REFER }, krElem);
//return this array back to pool
fAttrChecker.returnAttrArray(attrValues, schemaDoc);
return;
}
UniqueOrKey key = null;
IdentityConstraint ret = (IdentityConstraint)fSchemaHandler.getGlobalDecl(schemaDoc, XSDHandler.IDENTITYCONSTRAINT_TYPE, kName, krElem);
// if ret == null, we've already reported an error in getGlobalDecl
// we report an error only when ret != null, and the return type keyref
if (ret != null) {
if (ret.getCategory() == IdentityConstraint.IC_KEY ||
ret.getCategory() == IdentityConstraint.IC_UNIQUE) {
key = (UniqueOrKey)ret;
} else {
reportSchemaError("src-resolve", new Object[]{kName.rawname, "identity constraint key/unique"}, krElem);
}
}
if(key == null) {
fAttrChecker.returnAttrArray(attrValues, schemaDoc);
return;
}
KeyRef keyRef = new KeyRef(schemaDoc.fTargetNamespace, krName, element.fName, key);
// If errors occurred in traversing the identity constraint, then don't
// add it to the schema, to avoid errors when processing the instance.
if (traverseIdentityConstraint(keyRef, krElem, schemaDoc, attrValues)) {
//Schema Component Constraint: Identity-constraint Definition Properties Correct
//2 If the {identity-constraint category} is keyref, the cardinality of the {fields} must equal that of the {fields} of the {referenced key}.
if(key.getFieldCount() != keyRef.getFieldCount()) {
reportSchemaError("c-props-correct.2" , new Object [] {krName,key.getIdentityConstraintName()}, krElem);
} else {
// add key reference to element decl
// and stuff this in the grammar
if (grammar.getIDConstraintDecl(keyRef.getIdentityConstraintName()) == null) {
grammar.addIDConstraintDecl(element, keyRef);
}
// also add it to extended map
final String loc = fSchemaHandler.schemaDocument2SystemId(schemaDoc);
final IdentityConstraint idc = grammar.getIDConstraintDecl(keyRef.getIdentityConstraintName(), loc);
if (idc == null) {
grammar.addIDConstraintDecl(element, keyRef, loc);
}
// handle duplicates
if (fSchemaHandler.fTolerateDuplicates) {
if (idc != null) {
if (idc instanceof KeyRef) {
keyRef = (KeyRef) idc;
}
}
fSchemaHandler.addIDConstraintDecl(keyRef);
}
}
}
// and put back attributes
fAttrChecker.returnAttrArray(attrValues, schemaDoc);
} // traverse(Element,int,XSDocumentInfo, SchemaGrammar)
} // XSDKeyrefTraverser