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/*
* Copyright 2006-2012 Amazon Technologies, Inc. or its affiliates.
* Amazon, Amazon.com and Carbonado are trademarks or registered trademarks
* of Amazon Technologies, Inc. or its affiliates. All rights reserved.
*
* Licensed 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.
*/
/**
* Support for LOB property types, which are Large OBjects. Properties declared
* as {@link com.amazon.carbonado.lob.Blob Blob} or {@link
* com.amazon.carbonado.lob.Clob Clob} are treated differently than regular
* properties. In particular:
*
* <ul>
* <li>Repository typically stores LOB data external from enclosing storable
* <li>LOBs are accessed in a manner similar to how files are accessed
* <li>LOB data is often read/written in chunks, so consider accessing in a transaction scope
* <li>LOBs cannot be annotated with {@link com.amazon.carbonado.PrimaryKey
* PrimaryKey}, {@link com.amazon.carbonado.Key Key}, {@link
* com.amazon.carbonado.Index Index}, {@link com.amazon.carbonado.Join Join},
* {@link com.amazon.carbonado.Version Version}, or {@link
* com.amazon.carbonado.Sequence Sequence}
* <li>LOBs cannot be used in a {@link com.amazon.carbonado.Storage#query(String) query filter}
* </ul>
*
* <p>Also, setting a LOB property does not dirty that property unless the new
* LOB is unequal. Updating a LOB property typically involves operating on the
* LOB itself. Setting the LOB property again is useful only when completely
* replacing the data, which can be a relatively expensive operation.
*
* <p>Some repositories require that large text data be stored as a LOB. If the
* text property is intended to fit entirely in memory, consider defining the
* property as a String instead of a LOB. This allows the repository to decide
* if it is appropriate to store it as a LOB. If explicit control over charset
* encoding is required, add a {@link com.amazon.carbonado.adapter.TextAdapter
* TextAdapter} annotation.
*/
package com.amazon.carbonado.lob;
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