net.java.ao.schema.Indexed Maven / Gradle / Ivy
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This is the core library for Active Objects. It is generic and can be embedded in any environment.
As such it is generic and won't contain all connection pooling, etc.
/*
* Copyright 2007 Daniel Spiewak
*
* 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.
*/
package net.java.ao.schema;
import net.java.ao.Searchable;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
/**
* Marks the corresponding database field as requiring database indexing.
* This is different from the full-text search capabilities provided by Lucene
* in that the indexing is actually handled within the database itself. For
* full-text search configuration, see the {@link Searchable} annotation.
*
* From a design standpoint, this annotation should be used quite sparingly.
* Any foreign key in an entity is already indexed (as enforced by AO
* migrations). Thus, use should be limited to fields against which queries
* will often be run (e.g. people.last_name and so on).
*
* This annotation is only relevant to migrations. It has no effect upon
* "runtime" entity usage.
*
* @author Daniel Spiewak
*/
@Retention(RetentionPolicy.RUNTIME)
@Target(ElementType.METHOD)
public @interface Indexed {
}