io.ebeaninternal.server.deploy.BeanListHelp Maven / Gradle / Ivy
package io.ebeaninternal.server.deploy;
import io.ebean.EbeanServer;
import io.ebean.Query;
import io.ebean.Transaction;
import io.ebean.bean.BeanCollection;
import io.ebean.bean.BeanCollectionAdd;
import io.ebean.bean.EntityBean;
import io.ebean.common.BeanList;
import io.ebeaninternal.api.json.SpiJsonWriter;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
/**
* Helper object for dealing with Lists.
*/
public class BeanListHelp extends BaseCollectionHelp {
BeanListHelp(BeanPropertyAssocMany many) {
super(many);
}
BeanListHelp() {
super();
}
@Override
public BeanCollectionAdd getBeanCollectionAdd(Object bc, String mapKey) {
if (bc instanceof BeanList) {
BeanList bl = (BeanList) bc;
if (bl.getActualList() == null) {
bl.setActualList(new ArrayList<>());
}
return bl;
} else {
throw new RuntimeException("Unhandled type " + bc);
}
}
@Override
public BeanCollection createEmptyNoParent() {
return new BeanList<>();
}
@Override
public BeanCollection createEmpty(EntityBean parentBean) {
BeanList beanList = new BeanList<>(loader, parentBean, propertyName);
if (many != null) {
beanList.setModifyListening(many.getModifyListenMode());
}
return beanList;
}
@Override
public BeanCollection createReference(EntityBean parentBean) {
BeanList beanList = new BeanList<>(loader, parentBean, propertyName);
beanList.setModifyListening(many.getModifyListenMode());
return beanList;
}
@Override
public void refresh(EbeanServer server, Query query, Transaction t, EntityBean parentBean) {
BeanList newBeanList = (BeanList) server.findList(query, t);
refresh(newBeanList, parentBean);
}
@Override
public void refresh(BeanCollection bc, EntityBean parentBean) {
BeanList newBeanList = (BeanList) bc;
List currentList = (List) many.getValue(parentBean);
newBeanList.setModifyListening(many.getModifyListenMode());
if (currentList == null) {
// the currentList is null? Not really expecting this...
many.setValue(parentBean, newBeanList);
} else if (currentList instanceof BeanList) {
// normally this case, replace just the underlying list
BeanList currentBeanList = (BeanList) currentList;
currentBeanList.setActualList(newBeanList.getActualList());
currentBeanList.setModifyListening(many.getModifyListenMode());
} else {
// replace the entire list with the BeanList
many.setValue(parentBean, newBeanList);
}
}
@Override
public void jsonWrite(SpiJsonWriter ctx, String name, Object collection, boolean explicitInclude) throws IOException {
List list;
if (collection instanceof BeanCollection) {
BeanList beanList = (BeanList) collection;
if (!beanList.isPopulated()) {
if (explicitInclude) {
// invoke lazy loading as collection
// is explicitly included in the output
beanList.size();
} else {
return;
}
}
list = beanList.getActualList();
} else {
list = (List) collection;
}
jsonWriteCollection(ctx, name, list);
}
}