| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| package org.apache.openjpa.persistence.strategy.value; |
| |
| import java.io.Serializable; |
| import java.security.Principal; |
| |
| import org.apache.openjpa.jdbc.kernel.JDBCStore; |
| import org.apache.openjpa.jdbc.meta.ValueMapping; |
| import org.apache.openjpa.jdbc.meta.strats.AbstractValueHandler; |
| import org.apache.openjpa.jdbc.schema.Column; |
| import org.apache.openjpa.jdbc.schema.ColumnIO; |
| import org.apache.openjpa.meta.JavaTypes; |
| |
| /** |
| * A ValueHandler which handles a Principal and stores it as String representation. |
| * I use Principal because this class exists in every JDK. A more practical example |
| * could be joda LocalDate or the new Java8 Date classes. |
| */ |
| public class PrincipalValueStrategyHandler extends AbstractValueHandler { |
| |
| private static final long serialVersionUID = 8371304701543038775L; |
| |
| private static final PrincipalValueStrategyHandler _instance = new PrincipalValueStrategyHandler(); |
| |
| public static PrincipalValueStrategyHandler getInstance() { |
| return _instance; |
| } |
| |
| @Override |
| public Column[] map(ValueMapping arg0, String name, ColumnIO arg2, |
| boolean arg3) { |
| |
| Column col = new Column(); |
| col.setName(name); |
| col.setJavaType(JavaTypes.STRING); |
| |
| return new Column[]{col}; |
| } |
| |
| @Override |
| public Object toDataStoreValue(ValueMapping vm, Object val, JDBCStore store) { |
| |
| if (val instanceof Principal) { |
| return ((Principal) val).getName(); |
| } |
| |
| return null; |
| } |
| |
| @Override |
| public Object toObjectValue(ValueMapping vm, final Object val) { |
| if (val == null || !(val instanceof String)) { |
| return null; |
| } |
| |
| return new TestPrincipal((String) val); |
| } |
| |
| |
| public static class TestPrincipal implements Principal, Serializable { |
| |
| private static final long serialVersionUID = 1L; |
| private final String name; |
| |
| public TestPrincipal(String name) { |
| this.name = name; |
| } |
| |
| @Override |
| public String getName() { |
| return name; |
| } |
| } |
| } |