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/*
* Copyright (c) 2009-2016, Data Geekery GmbH (http://www.datageekery.com)
* All rights reserved.
*
* 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
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* 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.
*
* Other licenses:
* -----------------------------------------------------------------------------
* Commercial licenses for this work are available. These replace the above
* ASL 2.0 and offer limited warranties, support, maintenance, and commercial
* database integrations.
*
* For more information, please visit: http://www.jooq.org/licenses
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*/
package org.jooq.impl;
import static java.lang.Boolean.TRUE;
import static java.util.Arrays.asList;
// ...
import static org.jooq.SQLDialect.SQLITE;
import static org.jooq.conf.SettingsTools.updatablePrimaryKeys;
import static org.jooq.impl.RecordDelegate.delegate;
import static org.jooq.impl.RecordDelegate.RecordLifecycleType.DELETE;
import static org.jooq.impl.RecordDelegate.RecordLifecycleType.REFRESH;
import static org.jooq.impl.RecordDelegate.RecordLifecycleType.STORE;
import static org.jooq.impl.RecordDelegate.RecordLifecycleType.UPDATE;
import static org.jooq.impl.Tools.EMPTY_FIELD;
import static org.jooq.impl.Tools.settings;
import java.math.BigInteger;
import java.sql.Timestamp;
import java.util.Collection;
import java.util.List;
import org.jooq.Configuration;
import org.jooq.DeleteQuery;
import org.jooq.Field;
import org.jooq.ForeignKey;
import org.jooq.Record;
import org.jooq.Result;
import org.jooq.SelectQuery;
import org.jooq.Table;
import org.jooq.TableField;
import org.jooq.TableRecord;
import org.jooq.UniqueKey;
import org.jooq.UpdatableRecord;
import org.jooq.UpdateQuery;
import org.jooq.exception.DataChangedException;
import org.jooq.exception.NoDataFoundException;
import org.jooq.tools.JooqLogger;
import org.jooq.tools.StringUtils;
/**
* A record implementation for a record holding a primary key
*
* This type is for JOOQ INTERNAL USE only. Do not reference directly
*
* @author Lukas Eder
*/
public class UpdatableRecordImpl> extends TableRecordImpl implements UpdatableRecord {
/**
* Generated UID
*/
private static final long serialVersionUID = -1012420583600561579L;
private static final JooqLogger log = JooqLogger.getLogger(UpdatableRecordImpl.class);
public UpdatableRecordImpl(Table table) {
super(table);
}
@Override
@SuppressWarnings({ "rawtypes", "unchecked" })
public Record key() {
RecordImpl result = new RecordImpl(getPrimaryKey().getFields());
result.setValues(result.fields.fields.fields, this);
return result;
}
@Override
public final > O fetchChild(ForeignKey key) {
return Tools.filterOne(fetchChildren(key));
}
@SuppressWarnings("unchecked")
@Override
public final > Result fetchChildren(ForeignKey key) {
return key.fetchChildren((R) this);
}
@Override
final UniqueKey getPrimaryKey() {
return getTable().getPrimaryKey();
}
@Override
public final int store() {
return store(fields.fields.fields);
}
@Override
public final int store(final Field... storeFields) {
final int[] result = new int[1];
delegate(configuration(), (Record) this, STORE)
.operate(new RecordOperation() {
@Override
public Record operate(Record record) throws RuntimeException {
result[0] = store0(storeFields);
return record;
}
});
return result[0];
}
@Override
public final int store(Collection> storeFields) {
return store(storeFields.toArray(EMPTY_FIELD));
}
@Override
public final int update() {
return update(fields.fields.fields);
}
@Override
public int update(Field... storeFields) {
return storeUpdate(storeFields, getPrimaryKey().getFieldsArray());
}
@Override
public final int update(Collection> storeFields) {
return update(storeFields.toArray(EMPTY_FIELD));
}
private final int store0(Field[] storeFields) {
TableField[] keys = getPrimaryKey().getFieldsArray();
boolean executeUpdate = false;
// [#2764] If primary key values are allowed to be changed,
// inserting is only possible without prior loading of pk values
if (updatablePrimaryKeys(settings(this))) {
executeUpdate = fetched;
}
else {
for (TableField field : keys) {
// If any primary key value is null or changed
if (changed(field) ||
// [#3237] or if a NOT NULL primary key value is null, then execute an INSERT
(field.getDataType().nullable() == false && get(field) == null)) {
executeUpdate = false;
break;
}
// Otherwise, updates are possible
executeUpdate = true;
}
}
int result = 0;
if (executeUpdate) {
result = storeUpdate(storeFields, keys);
}
else {
result = storeInsert(storeFields);
}
return result;
}
private final int storeUpdate(final Field[] storeFields, final TableField[] keys) {
final int[] result = new int[1];
delegate(configuration(), (Record) this, UPDATE)
.operate(new RecordOperation() {
@Override
public Record operate(Record record) throws RuntimeException {
result[0] = storeUpdate0(storeFields, keys);
return record;
}
});
return result[0];
}
private final int storeUpdate0(Field[] storeFields, TableField[] keys) {
UpdateQuery update = create().updateQuery(getTable());
addChangedValues(storeFields, update);
Tools.addConditions(update, this, keys);
// Don't store records if no value was set by client code
if (!update.isExecutable()) {
if (log.isDebugEnabled())
log.debug("Query is not executable", update);
return 0;
}
// [#1596] Set timestamp and/or version columns to appropriate values
BigInteger version = addRecordVersion(update);
Timestamp timestamp = addRecordTimestamp(update);
if (isExecuteWithOptimisticLocking()) {
// [#1596] Add additional conditions for version and/or timestamp columns
if (isTimestampOrVersionAvailable()) {
addConditionForVersionAndTimestamp(update);
}
// [#1547] Try fetching the Record again first, and compare this
// Record's original values with the ones in the database
// [#5384] Do this only if the exclusion flag for unversioned records is off
else if (isExecuteWithOptimisticLockingIncludeUnversioned()) {
checkIfChanged(keys);
}
}
// [#1596] Check if the record was really changed in the database
// [#1859] Specify the returning clause if needed
Collection> key = setReturningIfNeeded(update);
int result = update.execute();
checkIfChanged(result, version, timestamp);
if (result > 0) {
for (Field storeField : storeFields)
changed(storeField, false);
// [#1859] If an update was successful try fetching the generated
getReturningIfNeeded(update, key);
}
return result;
}
@Override
public final int delete() {
final int[] result = new int[1];
delegate(configuration(), (Record) this, DELETE)
.operate(new RecordOperation() {
@Override
public Record operate(Record record) throws RuntimeException {
result[0] = delete0();
return record;
}
});
return result[0];
}
private final int delete0() {
TableField[] keys = getPrimaryKey().getFieldsArray();
try {
DeleteQuery delete1 = create().deleteQuery(getTable());
Tools.addConditions(delete1, this, keys);
if (isExecuteWithOptimisticLocking()) {
// [#1596] Add additional conditions for version and/or timestamp columns
if (isTimestampOrVersionAvailable()) {
addConditionForVersionAndTimestamp(delete1);
}
// [#1547] Try fetching the Record again first, and compare this
// Record's original values with the ones in the database
// [#5384] Do this only if the exclusion flag for unversioned records is off
else if (isExecuteWithOptimisticLockingIncludeUnversioned()) {
checkIfChanged(keys);
}
}
int result = delete1.execute();
checkIfChanged(result, null, null);
return result;
}
// [#673] [#3363] If store() is called after delete(), a new INSERT should
// be executed and the record should be recreated
finally {
changed(true);
fetched = false;
}
}
@Override
public final void refresh() {
refresh(fields.fields.fields);
}
@Override
public final void refresh(final Field... refreshFields) {
SelectQuery select = create().selectQuery();
select.addSelect(refreshFields);
select.addFrom(getTable());
Tools.addConditions(select, this, getPrimaryKey().getFieldsArray());
if (select.execute() == 1) {
final AbstractRecord source = (AbstractRecord) select.getResult().get(0);
delegate(configuration(), (Record) this, REFRESH)
.operate(new RecordOperation() {
@Override
public Record operate(Record record) throws RuntimeException {
setValues(refreshFields, source);
return record;
}
});
}
else {
throw new NoDataFoundException("Exactly one row expected for refresh. Record does not exist in database.");
}
}
@Override
public final void refresh(Collection> refreshFields) {
refresh(refreshFields.toArray(EMPTY_FIELD));
}
@Override
public final R copy() {
// [#3359] The "fetched" flag must be set to false to enforce INSERT statements on
// subsequent store() calls - when Settings.updatablePrimaryKeys is set.
return Tools.newRecord(false, getTable(), configuration())
.operate(new RecordOperation() {
@Override
public R operate(R copy) throws RuntimeException {
// Copy all fields. This marks them all as isChanged, which is important
List> key = getPrimaryKey().getFields();
for (Field field : fields.fields.fields) {
// Don't copy key values
if (!key.contains(field)) {
setValue(copy, field);
}
}
return copy;
}
/**
* Extracted method to ensure generic type safety.
*/
private final void setValue(Record record, Field field) {
record.set(field, get(field));
}
});
}
private final boolean isExecuteWithOptimisticLocking() {
Configuration configuration = configuration();
// This can be null when the current record is detached
return configuration != null
? TRUE.equals(configuration.settings().isExecuteWithOptimisticLocking())
: false;
}
private final boolean isExecuteWithOptimisticLockingIncludeUnversioned() {
Configuration configuration = configuration();
// This can be null when the current record is detached
return configuration != null
? !TRUE.equals(configuration.settings().isExecuteWithOptimisticLockingExcludeUnversioned())
: true;
}
@SuppressWarnings("deprecation")
private final void addConditionForVersionAndTimestamp(org.jooq.ConditionProvider query) {
TableField v = getTable().getRecordVersion();
TableField t = getTable().getRecordTimestamp();
if (v != null) Tools.addCondition(query, this, v);
if (t != null) Tools.addCondition(query, this, t);
}
/**
* Perform an additional SELECT .. FOR UPDATE to check if the underlying
* database record has been changed compared to this record.
*/
private final void checkIfChanged(TableField[] keys) {
SelectQuery select = create().selectQuery(getTable());
Tools.addConditions(select, this, keys);
// [#1547] MS Access and SQLite doesn't support FOR UPDATE. CUBRID and SQL Server
// can emulate it, though!
if (!asList(SQLITE).contains(create().configuration().dialect().family())) {
select.setForUpdate(true);
}
R record = select.fetchOne();
if (record == null) {
throw new DataChangedException("Database record no longer exists");
}
for (Field field : fields.fields.fields) {
Object thisObject = original(field);
Object thatObject = record.original(field);
if (!StringUtils.equals(thisObject, thatObject)) {
throw new DataChangedException("Database record has been changed");
}
}
}
/**
* Check if a database record was changed in the database.
*/
private final void checkIfChanged(int result, BigInteger version, Timestamp timestamp) {
// [#1596] If update/delete was successful, update version and/or
// timestamp columns.
// [#673] Do this also for deletions, in case a deleted record is re-added
if (result > 0) {
setRecordVersionAndTimestamp(version, timestamp);
}
// [#1596] No records were updated due to version and/or timestamp change
else if (isExecuteWithOptimisticLocking()) {
throw new DataChangedException("Database record has been changed or doesn't exist any longer");
}
}
}