xsdelementtraverser.java

java1.6众多例子参考

            element = fSchemaHandler.fDeclPool.getElementDecl();
        } else {
            element = new XSElementDecl();
        }
        // get 'name'
        if (nameAtt != null)
            element.fName = fSymbolTable.addSymbol(nameAtt);
        
        // get 'target namespace'
        if (isGlobal) {
            element.fTargetNamespace = schemaDoc.fTargetNamespace;
            element.setIsGlobal();
        }
        else {
            if (parent instanceof XSComplexTypeDecl)
                element.setIsLocal((XSComplexTypeDecl)parent);
            
            if (formAtt != null) {
                if (formAtt.intValue() == SchemaSymbols.FORM_QUALIFIED)
                    element.fTargetNamespace = schemaDoc.fTargetNamespace;
                else
                    element.fTargetNamespace = null;
            } else if (schemaDoc.fAreLocalElementsQualified) {
                element.fTargetNamespace = schemaDoc.fTargetNamespace;
            } else {
                element.fTargetNamespace = null;
            }
        }
        
        // get 'block', 'final', 'nillable', 'abstract'
        if (blockAtt == null) {
            // use defaults
            element.fBlock = schemaDoc.fBlockDefault;
            // discard valid Block 'Default' values that are invalid for Block
            // respect #all
            if (element.fBlock != XSConstants.DERIVATION_ALL) {
                element.fBlock &= (XSConstants.DERIVATION_EXTENSION | XSConstants.DERIVATION_RESTRICTION | XSConstants.DERIVATION_SUBSTITUTION);
            }
        } else {
            // use specified values
            element.fBlock = blockAtt.shortValue();
            // check for valid values
            if ((element.fBlock != XSConstants.DERIVATION_ALL)
                &&
                ((element.fBlock | XSConstants.DERIVATION_EXTENSION_RESTRICTION_SUBSTITION)
                    != XSConstants.DERIVATION_EXTENSION_RESTRICTION_SUBSTITION)) {
                reportSchemaError(
                        "s4s-att-invalid-value",
                        new Object[]{element.fName, "block", "must be (#all | List of (extension | restriction | substitution))"},
                        elmDecl);
            }
        }

        element.fFinal = finalAtt == null ? schemaDoc.fFinalDefault : finalAtt.shortValue();
        // discard valid Final 'Default' values that are invalid for Final
        element.fFinal &= (XSConstants.DERIVATION_EXTENSION | XSConstants.DERIVATION_RESTRICTION);
        
        if (nillableAtt.booleanValue())
            element.setIsNillable();
        if (abstractAtt != null && abstractAtt.booleanValue())
            element.setIsAbstract();
        
        // get 'value constraint'
        if (fixedAtt != null) {
            element.fDefault = new ValidatedInfo();
            element.fDefault.normalizedValue = fixedAtt;
            element.setConstraintType(XSConstants.VC_FIXED);
        } else if (defaultAtt != null) {
            element.fDefault = new ValidatedInfo();
            element.fDefault.normalizedValue = defaultAtt;
            element.setConstraintType(XSConstants.VC_DEFAULT);
        } else {
            element.setConstraintType(XSConstants.VC_NONE);
        }
        
        // get 'substitutionGroup affiliation'
        if (subGroupAtt != null) {
            element.fSubGroup = (XSElementDecl)fSchemaHandler.getGlobalDecl(schemaDoc, XSDHandler.ELEMENT_TYPE, subGroupAtt, elmDecl);
        }
        
        // get 'annotation'
        Element child = DOMUtil.getFirstChildElement(elmDecl);
        XSAnnotationImpl annotation = null;
        if(child != null && DOMUtil.getLocalName(child).equals(SchemaSymbols.ELT_ANNOTATION)) {
            annotation = traverseAnnotationDecl(child, attrValues, false, schemaDoc);
            child = DOMUtil.getNextSiblingElement(child);
        }
        else {
            String text = DOMUtil.getSyntheticAnnotation(elmDecl);
            if (text != null) {
                annotation = traverseSyntheticAnnotation(elmDecl, text, attrValues, false, schemaDoc);
            }
        }
        element.fAnnotation = annotation;
        
        // get 'type definition'
        XSTypeDefinition elementType = null;
        boolean haveAnonType = false;
        
        // Handle Anonymous type if there is one
        if (child != null) {
            String childName = DOMUtil.getLocalName(child);
            
            if (childName.equals(SchemaSymbols.ELT_COMPLEXTYPE)) {
                elementType = fSchemaHandler.fComplexTypeTraverser.traverseLocal(child, schemaDoc, grammar);
                haveAnonType = true;
                child = DOMUtil.getNextSiblingElement(child);
            }
            else if (childName.equals(SchemaSymbols.ELT_SIMPLETYPE)) {
                elementType = fSchemaHandler.fSimpleTypeTraverser.traverseLocal(child, schemaDoc, grammar);
                haveAnonType = true;
                child = DOMUtil.getNextSiblingElement(child);
            }
        }
        
        // Handler type attribute
        if (elementType == null && typeAtt != null) {
            elementType = (XSTypeDefinition)fSchemaHandler.getGlobalDecl(schemaDoc, XSDHandler.TYPEDECL_TYPE, typeAtt, elmDecl);
        }
        
        // Get it from the substitutionGroup declaration
        if (elementType == null && element.fSubGroup != null) {
            elementType = element.fSubGroup.fType;
        }
        
        if (elementType == null) {
            elementType = SchemaGrammar.fAnyType;
        }
        
        element.fType = elementType;
        
        // get 'identity constraint'
        
        // see if there's something here; it had better be key, keyref or unique.
        if (child != null) {
            String childName = DOMUtil.getLocalName(child);
            while (child != null &&
                    (childName.equals(SchemaSymbols.ELT_KEY) ||
                            childName.equals(SchemaSymbols.ELT_KEYREF) ||
                            childName.equals(SchemaSymbols.ELT_UNIQUE))) {
                
                if (childName.equals(SchemaSymbols.ELT_KEY) ||
                        childName.equals(SchemaSymbols.ELT_UNIQUE)) {
                    // need to set <key>/<unique> to hidden before traversing it,
                    // because it has global scope
                    DOMUtil.setHidden(child);
                    fSchemaHandler.fUniqueOrKeyTraverser.traverse(child, element, schemaDoc, grammar);
                    if(DOMUtil.getAttrValue(child, SchemaSymbols.ATT_NAME).length() != 0 ) {
                        fSchemaHandler.checkForDuplicateNames(
                                (schemaDoc.fTargetNamespace == null) ? ","+DOMUtil.getAttrValue(child, SchemaSymbols.ATT_NAME)
                                        : schemaDoc.fTargetNamespace+","+ DOMUtil.getAttrValue(child, SchemaSymbols.ATT_NAME),
                                        fSchemaHandler.getIDRegistry(), fSchemaHandler.getIDRegistry_sub(),
                                        child, schemaDoc);
                    }
                } else if (childName.equals(SchemaSymbols.ELT_KEYREF)) {
                    fSchemaHandler.storeKeyRef(child, schemaDoc, element);
                }
                child = DOMUtil.getNextSiblingElement(child);
                if (child != null) {
                    childName = DOMUtil.getLocalName(child);
                }
            }
        }
        
        // Step 2: register the element decl to the grammar
        if (isGlobal && nameAtt != null)
            grammar.addGlobalElementDecl(element);
        
        // Step 3: check against schema for schemas
        
        // required attributes
        if (nameAtt == null) {
            if (isGlobal)
                reportSchemaError("s4s-att-must-appear", new Object[]{SchemaSymbols.ELT_ELEMENT, SchemaSymbols.ATT_NAME}, elmDecl);
            else
                reportSchemaError("src-element.2.1", null, elmDecl);
            nameAtt = NO_NAME;
        }
        
        // element
        if (child != null) {
            reportSchemaError("s4s-elt-must-match.1", new Object[]{nameAtt, "(annotation?, (simpleType | complexType)?, (unique | key | keyref)*))", DOMUtil.getLocalName(child)}, child);
        }
        
        // Step 4: check 3.3.3 constraints
        
        // src-element
        
        // 1 default and fixed must not both be present.
        if (defaultAtt != null && fixedAtt != null) {
            reportSchemaError("src-element.1", new Object[]{nameAtt}, elmDecl);
        }
        
        // 2 If the item's parent is not <schema>, then all of the following must be true:
        // 2.1 One of ref or name must be present, but not both.
        // This is checked in XSAttributeChecker
        
        // 2.2 If ref is present, then all of <complexType>, <simpleType>, <key>, <keyref>, <unique>, nillable, default, fixed, form, block and type must be absent, i.e. only minOccurs, maxOccurs, id are allowed in addition to ref, along with <annotation>.
        // Attributes are checked in XSAttributeChecker, elements are checked in "traverse" method
        
        // 3 type and either <simpleType> or <complexType> are mutually exclusive.
        if (haveAnonType && (typeAtt != null)) {
            reportSchemaError("src-element.3", new Object[]{nameAtt}, elmDecl);
        }
        
        // Step 5: check 3.3.6 constraints
        // check for NOTATION type
        checkNotationType(nameAtt, elementType, elmDecl);
        
        // e-props-correct
        
        // 2 If there is a {value constraint}, the canonical lexical representation of its value must be valid with respect to the {type definition} as defined in Element Default Valid (Immediate) (3.3.6).
        if (element.fDefault != null) {
            fValidationState.setNamespaceSupport(schemaDoc.fNamespaceSupport);
            if (XSConstraints.ElementDefaultValidImmediate(element.fType, element.fDefault.normalizedValue, fValidationState, element.fDefault) == null) {
                reportSchemaError ("e-props-correct.2", new Object[]{nameAtt, element.fDefault.normalizedValue}, elmDecl);
                element.setConstraintType(XSConstants.VC_NONE);
            }
        }
        
        // 4 If there is an {substitution group affiliation}, the {type definition} of the element declaration must be validly derived from the {type definition} of the {substitution group affiliation}, given the value of the {substitution group exclusions} of the {substitution group affiliation}, as defined in Type Derivation OK (Complex) (3.4.6) (if the {type definition} is complex) or as defined in Type Derivation OK (Simple) (3.14.6) (if the {type definition} is simple).
        if (element.fSubGroup != null) {
            if (!XSConstraints.checkTypeDerivationOk(element.fType, element.fSubGroup.fType, element.fSubGroup.fFinal)) {
                reportSchemaError ("e-props-correct.4", new Object[]{nameAtt, subGroupAtt.prefix+":"+subGroupAtt.localpart}, elmDecl);
            }
        }
        
        // 5 If the {type definition} or {type definition}'s {content type} is or is derived from ID then there must not be a {value constraint}.
        if (element.fDefault != null) {
            if ((elementType.getTypeCategory() == XSTypeDefinition.SIMPLE_TYPE &&
                    ((XSSimpleType)elementType).isIDType()) ||
                    (elementType.getTypeCategory() == XSTypeDefinition.COMPLEX_TYPE &&
                            ((XSComplexTypeDecl)elementType).containsTypeID())) {
                reportSchemaError ("e-props-correct.5", new Object[]{element.fName}, elmDecl);
            }
        }
        
        // Element without a name. Return null.
        if (element.fName == null)
            return null;
        
        return element;
    }
    
    void reset(SymbolTable symbolTable, boolean validateAnnotations) {
        super.reset(symbolTable, validateAnnotations);
        fDeferTraversingLocalElements = true;
    } // reset()
    
}