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package com.sun.org.apache.xerces.internal.impl.xs.traversers;

import com.sun.org.apache.xerces.internal.impl.xpath.XPathException;
import com.sun.org.apache.xerces.internal.impl.xs.SchemaSymbols;
import com.sun.org.apache.xerces.internal.impl.xs.identity.Field;
import com.sun.org.apache.xerces.internal.impl.xs.identity.IdentityConstraint;
import com.sun.org.apache.xerces.internal.impl.xs.identity.Selector;
import com.sun.org.apache.xerces.internal.util.DOMUtil;
import com.sun.org.apache.xerces.internal.util.XMLChar;
import org.w3c.dom.Element;

This class contains code that all three IdentityConstraint traversers (the XSDUniqueTraverser, XSDKeyTraverser and XSDKeyrefTraverser) rely upon.
@xerces.internal
/** * This class contains code that all three IdentityConstraint * traversers (the XSDUniqueTraverser, XSDKeyTraverser and * XSDKeyrefTraverser) rely upon. * * @xerces.internal * */
class XSDAbstractIDConstraintTraverser extends XSDAbstractTraverser { public XSDAbstractIDConstraintTraverser (XSDHandler handler, XSAttributeChecker gAttrCheck) { super(handler, gAttrCheck); } boolean traverseIdentityConstraint(IdentityConstraint ic, Element icElem, XSDocumentInfo schemaDoc, Object [] icElemAttrs) { // General Attribute Checking will have been done on icElem by caller // check for <annotation> and get selector Element sElem = DOMUtil.getFirstChildElement(icElem); if(sElem == null) { reportSchemaError("s4s-elt-must-match.2", new Object[]{"identity constraint", "(annotation?, selector, field+)"}, icElem); return false; } // General Attribute Checking on sElem // first child could be an annotation if (DOMUtil.getLocalName(sElem).equals(SchemaSymbols.ELT_ANNOTATION)) { ic.addAnnotation(traverseAnnotationDecl(sElem, icElemAttrs, false, schemaDoc)); sElem = DOMUtil.getNextSiblingElement(sElem); // if no more children report an error if(sElem == null) { reportSchemaError("s4s-elt-must-match.2", new Object[]{"identity constraint", "(annotation?, selector, field+)"}, icElem); return false; } } else { String text = DOMUtil.getSyntheticAnnotation(icElem); if (text != null) { ic.addAnnotation(traverseSyntheticAnnotation(icElem, text, icElemAttrs, false, schemaDoc)); } } // must be <selector> if(!DOMUtil.getLocalName(sElem).equals(SchemaSymbols.ELT_SELECTOR)) { reportSchemaError("s4s-elt-must-match.1", new Object[]{"identity constraint", "(annotation?, selector, field+)", SchemaSymbols.ELT_SELECTOR}, sElem); return false; } Object [] attrValues = fAttrChecker.checkAttributes(sElem, false, schemaDoc); // make sure <selector>'s content is fine: Element selChild = DOMUtil.getFirstChildElement(sElem); if (selChild !=null) { // traverse annotation if any if (DOMUtil.getLocalName(selChild).equals(SchemaSymbols.ELT_ANNOTATION)) { ic.addAnnotation(traverseAnnotationDecl(selChild, attrValues, false, schemaDoc)); selChild = DOMUtil.getNextSiblingElement(selChild); } else { reportSchemaError("s4s-elt-must-match.1", new Object[]{SchemaSymbols.ELT_SELECTOR, "(annotation?)", DOMUtil.getLocalName(selChild)}, selChild); } if (selChild != null) { reportSchemaError("s4s-elt-must-match.1", new Object [] {SchemaSymbols.ELT_SELECTOR, "(annotation?)", DOMUtil.getLocalName(selChild)}, selChild); } } else { String text = DOMUtil.getSyntheticAnnotation(sElem); if (text != null) { ic.addAnnotation(traverseSyntheticAnnotation(icElem, text, attrValues, false, schemaDoc)); } } String sText = ((String)attrValues[XSAttributeChecker.ATTIDX_XPATH]); if(sText == null) { reportSchemaError("s4s-att-must-appear", new Object [] {SchemaSymbols.ELT_SELECTOR, SchemaSymbols.ATT_XPATH}, sElem); return false; } sText = XMLChar.trim(sText); Selector.XPath sXpath = null; try { sXpath = new Selector.XPath(sText, fSymbolTable, schemaDoc.fNamespaceSupport); Selector selector = new Selector(sXpath, ic); ic.setSelector(selector); } catch (XPathException e) { reportSchemaError(e.getKey(), new Object[]{sText}, sElem); // put back attr values... fAttrChecker.returnAttrArray(attrValues, schemaDoc); return false; } // put back attr values... fAttrChecker.returnAttrArray(attrValues, schemaDoc); // get fields Element fElem = DOMUtil.getNextSiblingElement(sElem); if(fElem == null) { reportSchemaError("s4s-elt-must-match.2", new Object[]{"identity constraint", "(annotation?, selector, field+)"}, sElem); return false; } while (fElem != null) { if(!DOMUtil.getLocalName(fElem).equals(SchemaSymbols.ELT_FIELD)) { reportSchemaError("s4s-elt-must-match.1", new Object[]{"identity constraint", "(annotation?, selector, field+)", SchemaSymbols.ELT_FIELD}, fElem); fElem = DOMUtil.getNextSiblingElement(fElem); continue; } // General Attribute Checking attrValues = fAttrChecker.checkAttributes(fElem, false, schemaDoc); // and make sure <field>'s content is fine: Element fieldChild = DOMUtil.getFirstChildElement(fElem); if (fieldChild != null) { // traverse annotation if (DOMUtil.getLocalName(fieldChild).equals(SchemaSymbols.ELT_ANNOTATION)) { ic.addAnnotation(traverseAnnotationDecl(fieldChild, attrValues, false, schemaDoc)); fieldChild = DOMUtil.getNextSiblingElement(fieldChild); } } if (fieldChild != null) { reportSchemaError("s4s-elt-must-match.1", new Object [] {SchemaSymbols.ELT_FIELD, "(annotation?)", DOMUtil.getLocalName(fieldChild)}, fieldChild); } else { String text = DOMUtil.getSyntheticAnnotation(fElem); if (text != null) { ic.addAnnotation(traverseSyntheticAnnotation(icElem, text, attrValues, false, schemaDoc)); } } String fText = ((String)attrValues[XSAttributeChecker.ATTIDX_XPATH]); if (fText == null) { reportSchemaError("s4s-att-must-appear", new Object [] {SchemaSymbols.ELT_FIELD, SchemaSymbols.ATT_XPATH}, fElem); fAttrChecker.returnAttrArray(attrValues, schemaDoc); return false; } fText = XMLChar.trim(fText); try { Field.XPath fXpath = new Field.XPath(fText, fSymbolTable, schemaDoc.fNamespaceSupport); Field field = new Field(fXpath, ic); ic.addField(field); } catch (XPathException e) { reportSchemaError(e.getKey(), new Object[]{fText}, fElem); // put back attr values... fAttrChecker.returnAttrArray(attrValues, schemaDoc); return false; } fElem = DOMUtil.getNextSiblingElement(fElem); // put back attr values... fAttrChecker.returnAttrArray(attrValues, schemaDoc); } return ic.getFieldCount() > 0; } // traverseIdentityConstraint(IdentityConstraint,Element, XSDocumentInfo) } // XSDAbstractIDConstraintTraverser