ALF-10770: create schema representation

git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@31224 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261

source/java/org/alfresco/util/schemacomp/model/Schema.java

@@ -0,0 +1,91 @@
+/*
+ * 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 <http://www.gnu.org/licenses/>.
+ */
+package org.alfresco.util.schemacomp.model;
+
+import java.util.Collection;
+import java.util.Iterator;
+import java.util.LinkedHashMap;
+import java.util.Map;
+
+/**
+ * Instances of this class will represent a database schema.
+ * 
+ * @author Matt Ward
+ */
+public class 
+Schema extends AbstractDbObject implements Iterable<DbObject>
+{
+    private final Map<Object, DbObject> objects = new LinkedHashMap<Object, DbObject>();
+
+    /**
+     * @param key
+     * @return
+     */
+    public DbObject get(Object key)
+    {
+        return this.objects.get(key);
+    }
+
+    /**
+     * @param table
+     */
+    public void put(DbObject dbObject)
+    {
+        objects.put(dbObject.getIdentifier(), dbObject);
+    }
+
+    @Override
+    public Iterator<DbObject> iterator()
+    {
+        return objects.values().iterator();
+    }
+
+    /**
+     * @param identifier
+     * @return
+     */
+    public boolean contains(Object identifier)
+    {
+        return objects.containsKey(identifier);
+    }
+
+    @Override
+    public int hashCode()
+    {
+        final int prime = 31;
+        int result = super.hashCode();
+        result = prime * result + ((this.objects == null) ? 0 : this.objects.hashCode());
+        return result;
+    }
+
+    @Override
+    public boolean equals(Object obj)
+    {
+        if (this == obj) return true;
+        if (!super.equals(obj)) return false;
+        if (getClass() != obj.getClass()) return false;
+        Schema other = (Schema) obj;
+        if (this.objects == null)
+        {
+            if (other.objects != null) return false;
+        }
+        else if (!this.objects.equals(other.objects)) return false;
+        return true;
+    }
+}