/* * Copyright (C) 2005-2011 Alfresco Software Limited. * * This file is part of Alfresco * * Alfresco is free software: you can redistribute it and/or modify * it under the terms of the GNU Lesser General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * Alfresco is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public License * along with Alfresco. If not, see . */ package org.alfresco.util.schemacomp; import org.alfresco.util.schemacomp.model.Schema; import org.apache.xml.serialize.LineSeparator; import org.hibernate.dialect.Dialect; /** * Compares two abstract database schemas, a reference schema and a target schema (the schema to check for validity). * The reference schema is the primary schema and all objects in the right schema are judged relative to it. * * @author Matt Ward */ public class SchemaComparator { public static final String CHAR_SET = "UTF-8"; public static final String LINE_SEPARATOR = LineSeparator.Windows; private final Schema referenceSchema; private final Schema targetSchema; private final DiffContext ctx; /** * Construct a comparator to compare a target schema against a reference schema. Validators supplied * by the reference schema will be used to validate the target schema. * * @param referenceSchema * @param targetSchema */ public SchemaComparator(Schema referenceSchema, Schema targetSchema, Dialect dialect) { this.referenceSchema = referenceSchema; this.targetSchema = targetSchema; this.ctx = new DiffContext(dialect, referenceSchema, targetSchema); } public void validateAndCompare() { validateTargetSchema(); compare(); } /** * Check the left schema against the right schema and record any differences. */ private void compare() { referenceSchema.diff(targetSchema, ctx); } /** * Validate the target schema against the reference schema using the reference schema's validators. */ private void validateTargetSchema() { ValidatingVisitor validatingVisitor = new ValidatingVisitor(ctx); referenceSchema.accept(validatingVisitor); } /** * @return the schema comparison results. */ public Results getComparisonResults() { return ctx.getComparisonResults(); } }