001/*-------------------------------------------------------------------------+
002|                                                                          |
003| Copyright 2005-2011 the ConQAT Project                                   |
004|                                                                          |
005| Licensed under the Apache License, Version 2.0 (the "License");          |
006| you may not use this file except in compliance with the License.         |
007| You may obtain a copy of the License at                                  |
008|                                                                          |
009|    http://www.apache.org/licenses/LICENSE-2.0                            |
010|                                                                          |
011| Unless required by applicable law or agreed to in writing, software      |
012| distributed under the License is distributed on an "AS IS" BASIS,        |
013| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
014| See the License for the specific language governing permissions and      |
015| limitations under the License.                                           |
016+-------------------------------------------------------------------------*/
017package org.conqat.lib.commons.serialization.classes;
018
019import java.io.IOException;
020
021import org.conqat.lib.commons.serialization.SerializationConsistencyException;
022
023/**
024 * Base class for fields of primitive type.
025 */
026public abstract class SerializedPrimitiveFieldBase extends SerializedFieldBase {
027
028        /** Constructor. */
029        protected SerializedPrimitiveFieldBase(String name) {
030                super(name);
031        }
032
033        /**
034         * Ensures that the given value object is of the given type and not null.
035         * Returns the casted type.
036         */
037        @SuppressWarnings("unchecked")
038        protected <T> T ensureType(Object value, Class<T> type) throws SerializationConsistencyException {
039                if (!type.isInstance(value)) {
040                        String actualType = null;
041                        if (value != null) {
042                                actualType = value.getClass().getName();
043                        }
044                        throw new SerializationConsistencyException(
045                                        "Would have expected type " + type + " for field " + getName() + " but was " + actualType);
046                }
047                return (T) value;
048        }
049
050        /** Factory method for creating a primitive field from its type code. */
051        public static SerializedPrimitiveFieldBase fromTypeCode(char typeCode, String fieldName) throws IOException {
052                switch (typeCode) {
053                case SerializedByteField.TYPE_CODE:
054                        return new SerializedByteField(fieldName);
055                case SerializedCharField.TYPE_CODE:
056                        return new SerializedCharField(fieldName);
057                case SerializedDoubleField.TYPE_CODE:
058                        return new SerializedDoubleField(fieldName);
059                case SerializedFloatField.TYPE_CODE:
060                        return new SerializedFloatField(fieldName);
061                case SerializedIntField.TYPE_CODE:
062                        return new SerializedIntField(fieldName);
063                case SerializedLongField.TYPE_CODE:
064                        return new SerializedLongField(fieldName);
065                case SerializedShortField.TYPE_CODE:
066                        return new SerializedShortField(fieldName);
067                case SerializedBooleanField.TYPE_CODE:
068                        return new SerializedBooleanField(fieldName);
069                default:
070                        throw new SerializationConsistencyException("Unrecognized type code: " + typeCode);
071                }
072        }
073}