package com.avaje.ebeaninternal.server.persist.dmlbind;
import java.sql.SQLException;
import java.util.Arrays;
import java.util.List;
import javax.persistence.PersistenceException;
import com.avaje.ebean.bean.EntityBean;
import com.avaje.ebeaninternal.server.core.PersistRequestBean;
import com.avaje.ebeaninternal.server.deploy.BeanDescriptor;
import com.avaje.ebeaninternal.server.deploy.BeanProperty;
import com.avaje.ebeaninternal.server.deploy.BeanPropertyAssocOne;
import com.avaje.ebeaninternal.server.persist.dml.GenerateDmlRequest;
/**
* Bindable for a EmbeddedId.
*/
public final class BindableIdEmbedded implements BindableId {
private final BeanPropertyAssocOne<?> embId;
private final BeanProperty[] props;
private final MatchedImportedProperty[] matches;
public BindableIdEmbedded(BeanPropertyAssocOne<?> embId, BeanDescriptor<?> desc) {
this.embId = embId;
this.props = embId.getProperties();
matches = MatchedImportedProperty.build(props, desc);
}
public boolean isEmpty() {
return false;
}
public boolean isConcatenated() {
return true;
}
public String getIdentityColumn() {
// return null for concatenated keys
return null;
}
@Override
public String toString() {
return embId + " props:" + Arrays.toString(props);
}
/**
* Does nothing for BindableId.
*/
public void addToUpdate(PersistRequestBean<?> request, List<Bindable> list) {
// do nothing (id not changing)
}
public void dmlBind(BindableRequest request, EntityBean bean) throws SQLException {
EntityBean idValue = (EntityBean)embId.getValue(bean);
for (int i = 0; i < props.length; i++) {
Object value = props[i].getValue(idValue);
request.bind(value, props[i], props[i].getDbColumn());
}
request.setIdValue(idValue);
}
public void dmlAppend(GenerateDmlRequest request) {
for (int i = 0; i < props.length; i++) {
request.appendColumn(props[i].getDbColumn());
}
}
public boolean deriveConcatenatedId(PersistRequestBean<?> persist) {
if (matches == null) {
String m = "Matches for the concatinated key columns where not found?"
+ " I expect that the concatinated key was null, and this bean does"
+ " not have ManyToOne assoc beans matching the primary key columns?";
throw new PersistenceException(m);
}
EntityBean bean = persist.getEntityBean();
// create the new id
EntityBean newId = (EntityBean)embId.createEmbeddedId();
// populate it from the assoc one id values...
for (int i = 0; i < matches.length; i++) {
matches[i].populate(bean, newId);
}
// support PropertyChangeSupport
embId.setValueIntercept(bean, newId);
return true;
}
}