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DaoBase.java
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package act.db;
/*-
* #%L
* ACT Framework
* %%
* Copyright (C) 2014 - 2017 ActFramework
* %%
* 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.
* #L%
*/
import act.app.security.SecurityContext;
import act.inject.param.NoBind;
import act.util.ActContext;
import org.osgl.$;
import org.osgl.util.C;
import org.osgl.util.Generics;
import java.lang.annotation.Annotation;
import java.lang.reflect.Type;
import java.util.List;
import javax.enterprise.context.ApplicationScoped;
// We can't do this atm, otherwise app developer cannot use EbeanDao, or MorphiaDao directly
//@InheritedStateless
@NoBind
public abstract class DaoBase<ID_TYPE, MODEL_TYPE, QUERY_TYPE extends Dao.Query<MODEL_TYPE, QUERY_TYPE>>
implements Dao<ID_TYPE, MODEL_TYPE, QUERY_TYPE> {
private ActContext appCtx;
private SecurityContext secCtx;
private boolean destroyed;
protected Type modelType;
protected Class<MODEL_TYPE> modelClass;
protected Type idType;
protected Class<ID_TYPE> idClass;
protected Type queryType;
protected Class<QUERY_TYPE> queryClass;
public DaoBase() {
exploreTypes();
}
public DaoBase(Class<ID_TYPE> idType, Class<MODEL_TYPE> modelType) {
this.idType = $.requireNotNull(idType);
this.idClass = Generics.classOf(idType);
this.modelType = $.requireNotNull(modelType);
this.modelClass = Generics.classOf(modelType);
}
@Override
public void setAppContext(ActContext context) {
appCtx = context;
}
@Override
public void destroy() {
if (destroyed) return;
destroyed = true;
releaseResources();
appCtx = null;
secCtx = null;
}
@Override
public Class<ID_TYPE> idType() {
return idClass;
}
@Override
public Class<MODEL_TYPE> modelType() {
return modelClass;
}
@Override
public Class<QUERY_TYPE> queryType() {
return queryClass;
}
@Override
public boolean isDestroyed() {
return destroyed;
}
@Override
public void setSecurityContext(SecurityContext context) {
secCtx = context;
}
protected void releaseResources() {}
@Override
public Class<? extends Annotation> scope() {
return ApplicationScoped.class;
}
protected final ActContext appContext() {
return appCtx;
}
protected final SecurityContext securityContext() {
return secCtx;
}
@Override
public Iterable<MODEL_TYPE> findBy(String fields, Object... values) throws IllegalArgumentException {
return q(fields, values).fetch();
}
@Override
public MODEL_TYPE findOneBy(String fields, Object... values) throws IllegalArgumentException {
return q(fields, values).first();
}
@Override
public Iterable<MODEL_TYPE> findAll() {
return q().fetch();
}
@Override
public List<MODEL_TYPE> findAllAsList() {
return C.newList(findAll());
}
@Override
public long count() {
return q().count();
}
@Override
public long countBy(String fields, Object... values) throws IllegalArgumentException {
return q(fields, values).count();
}
private void exploreTypes() {
List<Type> types = Generics.typeParamImplementations(getClass(), DaoBase.class);
int sz = types.size();
if (sz < 1) {
return;
}
if (sz > 2) {
queryType = types.get(2);
queryClass = Generics.classOf(queryType);
}
if (sz > 1) {
modelType = types.get(1);
modelClass = Generics.classOf(modelType);
}
idType = types.get(0);
idClass = Generics.classOf(idType);
}
}