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

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

A class used to hold the internal schema grammar set for the current instance
Author:Sandy Gao, IBM
@xerces.internal
@LastModified: Nov 2017
/** * A class used to hold the internal schema grammar set for the current instance * * @xerces.internal * * @author Sandy Gao, IBM * @LastModified: Nov 2017 */
public class XSGrammarBucket { // Data
Map that maps between Namespace and a Grammar
/** * Map that maps between Namespace and a Grammar */
Map<String, SchemaGrammar> fGrammarRegistry = new HashMap<>(); SchemaGrammar fNoNSGrammar = null;
Get the schema grammar for the specified namespace
Params:
  • namespace –
Returns:SchemaGrammar associated with the namespace
/** * Get the schema grammar for the specified namespace * * @param namespace * @return SchemaGrammar associated with the namespace */
public SchemaGrammar getGrammar(String namespace) { if (namespace == null) return fNoNSGrammar; return fGrammarRegistry.get(namespace); }
Put a schema grammar into the registry This method is for internal use only: it assumes that a grammar with the same target namespace is not already in the bucket.
Params:
  • grammar – the grammar to put in the registry
/** * Put a schema grammar into the registry * This method is for internal use only: it assumes that a grammar with * the same target namespace is not already in the bucket. * * @param grammar the grammar to put in the registry */
public void putGrammar(SchemaGrammar grammar) { if (grammar.getTargetNamespace() == null) fNoNSGrammar = grammar; else fGrammarRegistry.put(grammar.getTargetNamespace(), grammar); }
put a schema grammar and any grammars imported by it (directly or inderectly) into the registry. when a grammar with the same target namespace is already in the bucket, and different from the one being added, it's an error, and no grammar will be added into the bucket.
Params:
  • grammar – the grammar to put in the registry
  • deep – whether to add imported grammars
Returns: whether the process succeeded
/** * put a schema grammar and any grammars imported by it (directly or * inderectly) into the registry. when a grammar with the same target * namespace is already in the bucket, and different from the one being * added, it's an error, and no grammar will be added into the bucket. * * @param grammar the grammar to put in the registry * @param deep whether to add imported grammars * @return whether the process succeeded */
public boolean putGrammar(SchemaGrammar grammar, boolean deep) { // whether there is one with the same tns SchemaGrammar sg = getGrammar(grammar.fTargetNamespace); if (sg != null) { // if the one we have is different from the one passed, it's an error return sg == grammar; } // not deep import, then just add this one grammar if (!deep) { putGrammar(grammar); return true; } // get all imported grammars, and make a copy of the Vector, so that // we can recursively process the grammars, and add distinct ones // to the same vector ArrayList<SchemaGrammar> currGrammars = (ArrayList<SchemaGrammar>)grammar.getImportedGrammars(); if (currGrammars == null) { putGrammar(grammar); return true; } @SuppressWarnings("unchecked") List<SchemaGrammar> grammars = ((ArrayList<SchemaGrammar>)currGrammars.clone()); SchemaGrammar sg1, sg2; List<SchemaGrammar> gs; // for all (recursively) imported grammars for (int i = 0; i < grammars.size(); i++) { // get the grammar sg1 = grammars.get(i); // check whether the bucket has one with the same tns sg2 = getGrammar(sg1.fTargetNamespace); if (sg2 == null) { // we need to add grammars imported by sg1 too gs = sg1.getImportedGrammars(); // for all grammars imported by sg2, but not in the vector // we add them to the vector if(gs == null) continue; for (int j = gs.size() - 1; j >= 0; j--) { sg2 = gs.get(j); if (!grammars.contains(sg2)) grammars.add(sg2); } } // we found one with the same target namespace // if the two grammars are not the same object, then it's an error else if (sg2 != sg1) { return false; } } // now we have all imported grammars stored in the vector. add them putGrammar(grammar); for (int i = grammars.size() - 1; i >= 0; i--) putGrammar(grammars.get(i)); return true; }
put a schema grammar and any grammars imported by it (directly or inderectly) into the registry. when a grammar with the same target namespace is already in the bucket, and different from the one being added, no grammar will be added into the bucket.
Params:
  • grammar – the grammar to put in the registry
  • deep – whether to add imported grammars
  • ignoreConflict – whether to ignore grammars that already exist in the grammar bucket or not - including 'grammar' parameter.
Returns: whether the process succeeded
/** * put a schema grammar and any grammars imported by it (directly or * inderectly) into the registry. when a grammar with the same target * namespace is already in the bucket, and different from the one being * added, no grammar will be added into the bucket. * * @param grammar the grammar to put in the registry * @param deep whether to add imported grammars * @param ignoreConflict whether to ignore grammars that already exist in the grammar * bucket or not - including 'grammar' parameter. * @return whether the process succeeded */
public boolean putGrammar(SchemaGrammar grammar, boolean deep, boolean ignoreConflict) { if (!ignoreConflict) { return putGrammar(grammar, deep); } // if grammar already exist in the bucket, we ignore the request SchemaGrammar sg = getGrammar(grammar.fTargetNamespace); if (sg == null) { putGrammar(grammar); } // not adding the imported grammars if (!deep) { return true; } // get all imported grammars, and make a copy of the Vector, so that // we can recursively process the grammars, and add distinct ones // to the same vector ArrayList<SchemaGrammar> currGrammars = (ArrayList<SchemaGrammar>)grammar.getImportedGrammars(); if (currGrammars == null) { return true; } @SuppressWarnings("unchecked") List<SchemaGrammar> grammars = ((ArrayList<SchemaGrammar>)currGrammars.clone()); SchemaGrammar sg1, sg2; List<SchemaGrammar> gs; // for all (recursively) imported grammars for (int i = 0; i < grammars.size(); i++) { // get the grammar sg1 = grammars.get(i); // check whether the bucket has one with the same tns sg2 = getGrammar(sg1.fTargetNamespace); if (sg2 == null) { // we need to add grammars imported by sg1 too gs = sg1.getImportedGrammars(); // for all grammars imported by sg2, but not in the vector // we add them to the vector if(gs == null) continue; for (int j = gs.size() - 1; j >= 0; j--) { sg2 = gs.get(j); if (!grammars.contains(sg2)) grammars.add(sg2); } } // we found one with the same target namespace, ignore it else { grammars.remove(sg1); } } // now we have all imported grammars stored in the vector. add them for (int i = grammars.size() - 1; i >= 0; i--) { putGrammar(grammars.get(i)); } return true; }
get all grammars in the registry
Returns:an array of SchemaGrammars.
/** * get all grammars in the registry * * @return an array of SchemaGrammars. */
public SchemaGrammar[] getGrammars() { // get the number of grammars int count = fGrammarRegistry.size() + (fNoNSGrammar==null ? 0 : 1); SchemaGrammar[] grammars = new SchemaGrammar[count]; // get grammars with target namespace int i = 0; for(Map.Entry<String, SchemaGrammar> entry : fGrammarRegistry.entrySet()){ grammars[i++] = entry.getValue(); } // add the grammar without target namespace, if any if (fNoNSGrammar != null) grammars[count-1] = fNoNSGrammar; return grammars; }
Clear the registry. REVISIT: update to use another XSGrammarBucket
/** * Clear the registry. * REVISIT: update to use another XSGrammarBucket */
public void reset() { fNoNSGrammar = null; fGrammarRegistry.clear(); } } // class XSGrammarBucket