| /* |
| * 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.jdbc.meta.strats; |
| |
| import org.apache.openjpa.jdbc.kernel.JDBCStore; |
| import org.apache.openjpa.jdbc.meta.FieldMapping; |
| import org.apache.openjpa.jdbc.meta.JavaSQLTypes; |
| import org.apache.openjpa.jdbc.meta.ValueMapping; |
| import org.apache.openjpa.jdbc.schema.Column; |
| import org.apache.openjpa.jdbc.schema.ColumnIO; |
| import org.apache.openjpa.meta.JavaTypes; |
| |
| /** |
| * Handler for simple type and string values. |
| * |
| * @nojavadoc |
| */ |
| public class ImmutableValueHandler |
| extends AbstractValueHandler { |
| |
| private static final ImmutableValueHandler _instance = |
| new ImmutableValueHandler(); |
| |
| /** |
| * Singleton instance. |
| */ |
| public static ImmutableValueHandler getInstance() { |
| return _instance; |
| } |
| |
| public Column[] map(ValueMapping vm, String name, ColumnIO io, |
| boolean adapt) { |
| Column col = new Column(); |
| col.setName(name); |
| if (vm.getTypeCode() == JavaTypes.DATE) |
| col.setJavaType(JavaSQLTypes.getDateTypeCode(vm.getType())); |
| else |
| col.setJavaType(vm.getTypeCode()); |
| return new Column[]{ col }; |
| } |
| |
| public boolean isVersionable(ValueMapping vm) { |
| switch (vm.getTypeCode()) { |
| case JavaTypes.BOOLEAN: |
| case JavaTypes.BYTE: |
| case JavaTypes.CHAR: |
| case JavaTypes.INT: |
| case JavaTypes.LONG: |
| case JavaTypes.SHORT: |
| case JavaTypes.BOOLEAN_OBJ: |
| case JavaTypes.BYTE_OBJ: |
| case JavaTypes.CHAR_OBJ: |
| case JavaTypes.INT_OBJ: |
| case JavaTypes.LONG_OBJ: |
| case JavaTypes.SHORT_OBJ: |
| case JavaTypes.STRING: |
| case JavaTypes.DATE: |
| case JavaTypes.BIGINTEGER: |
| case JavaTypes.LOCALE: |
| return true; |
| default: |
| return false; |
| } |
| } |
| |
| public Object toDataStoreValue(ValueMapping vm, Object val, |
| JDBCStore store) { |
| if (val != null) |
| return val; |
| |
| FieldMapping field = vm.getFieldMapping(); |
| if (field.getNullValue() != FieldMapping.NULL_DEFAULT) |
| return null; |
| |
| Column[] cols = vm.getColumns(); |
| if (cols[0].getDefaultString() != null) |
| return null; |
| |
| // honor the user's null-value=default |
| return JavaSQLTypes.getEmptyValue(vm.getTypeCode()); |
| } |
| } |