public JDBCCMRFieldBridge getCMRFieldByName(String name) {
for (int i = 0; i < cmrFields.length; ++i) {
JDBCCMRFieldBridge cmrField = cmrFields[i];
if (cmrField.getFieldName().equals(name)) return cmrField;
}
return null;
}
public void cascadeDelete(CmpEntityBeanContext ctx, Map oldRelations)
throws RemoveException, RemoteException {
for (int i = 0; i < cmrFields.length; ++i) {
JDBCCMRFieldBridge cmrField = cmrFields[i];
Object value = oldRelations.get(cmrField);
if (value != null) cmrField.cascadeDelete(ctx, (List) value);
}
}
public void initInstance(CmpEntityBeanContext ctx) {
for (int i = 0; i < tableFields.length; ++i) tableFields[i].initInstance(ctx);
// for(int i = 0; i < primaryKeyFields.length; ++i)
// primaryKeyFields[i].initInstance(ctx);
// for(int i = 0; i < cmpFields.length; ++i)
// cmpFields[i].initInstance(ctx);
for (int i = 0; i < cmrFields.length; ++i) {
JDBCCMRFieldBridge cmrField = cmrFields[i];
cmrField.initInstance(ctx);
}
}
private void destroyRelations(Object oldRelatedId, CmpEntityBeanContext ctx) {
JDBCCMRFieldBridge relatedCMRField = (JDBCCMRFieldBridge) cmrField.getRelatedCMRField();
relatedCMRField.removeRelatedPKWaitingForMyPK(oldRelatedId, ctx.getPrimaryKey());
try {
if (cmrField.isForeignKeyValid(oldRelatedId)) {
cmrField.destroyRelationLinks(ctx, oldRelatedId, true, false);
}
} catch (Exception e) {
// no such object
}
}
/**
* Going down the chain current related id is calculated and stored in oldRelatedId. When the
* next link is originator, the flow is going backward: - field state is updated with new value;
* - new related id is calculated; - old relationship is destroyed (if there is one); - new
* relationship is established (if it is valid).
*
* @param originator ChainLink that started execution.
* @param ctx EnterpriseEntityContext of the entity.
* @param fieldState field's state.
* @param newValue new field value.
*/
public void doExecute(
ChainLink originator, CmpEntityBeanContext ctx, FieldState fieldState, Object newValue) {
// get old related id
Object oldRelatedId = cmrField.getRelatedIdFromContext(ctx);
// invoke down the cmrChain
if (originator != getNextLink()) {
getNextLink().doExecute(originator, ctx, fieldState, newValue);
}
// update field state
fieldState.setValue(newValue);
// get new related id
Object newRelatedId = cmrField.getRelatedIdFromContext(ctx);
// destroy old relationship
if (oldRelatedId != null) destroyRelations(oldRelatedId, ctx);
// establish new relationship
if (newRelatedId != null) createRelations(newRelatedId, ctx);
}
private boolean[] loadGroupMask(String groupName, boolean[] defaultGroup) {
List<String> fieldNames = metadata.getLoadGroup(groupName);
boolean[] group = new boolean[tableFields.length];
if (defaultGroup != null) System.arraycopy(defaultGroup, 0, group, 0, group.length);
for (String fieldName : fieldNames) {
JDBCFieldBridge field = (JDBCFieldBridge) getFieldByName(fieldName);
if (field == null) throw MESSAGES.fieldNotFound(fieldName, getEntityName());
if (field instanceof JDBCCMRFieldBridge) {
JDBCCMRFieldBridge cmrField = (JDBCCMRFieldBridge) field;
if (cmrField.hasForeignKey()) {
JDBCCMPFieldBridge[] fkFields = (JDBCCMPFieldBridge[]) cmrField.getForeignKeyFields();
for (int i = 0; i < fkFields.length; ++i) {
group[fkFields[i].getTableIndex()] = true;
}
} else {
throw MESSAGES.onlyCmrFieldsWithFkInLoadGroup(fieldName);
}
} else {
group[((JDBCCMPFieldBridge) field).getTableIndex()] = true;
}
}
return group;
}
private void createRelations(Object newRelatedId, CmpEntityBeanContext ctx) {
try {
if (cmrField.isForeignKeyValid(newRelatedId)) {
cmrField.createRelationLinks(ctx, newRelatedId, false);
} else {
// set foreign key to a new value
cmrField.setForeignKey(ctx, newRelatedId);
// put calculated relatedId to the waiting list
if (ctx.getPrimaryKey() != null) {
JDBCCMRFieldBridge relatedCMRField = (JDBCCMRFieldBridge) cmrField.getRelatedCMRField();
relatedCMRField.addRelatedPKWaitingForMyPK(newRelatedId, ctx.getPrimaryKey());
}
}
} catch (Exception e) {
// no such object
}
}
