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/*
* Copyright (c) 2015, 2020, Oracle and/or its affiliates.
*
* This program is free software; you can redistribute it and/or modify it under
* the terms of the GNU General Public License, version 2.0, as published by the
* Free Software Foundation.
*
* This program is also distributed with certain software (including but not
* limited to OpenSSL) that is licensed under separate terms, as designated in a
* particular file or component or in included license documentation. The
* authors of MySQL hereby grant you an additional permission to link the
* program and your derivative works with the separately licensed software that
* they have included with MySQL.
*
* Without limiting anything contained in the foregoing, this file, which is
* part of MySQL Connector/J, is also subject to the Universal FOSS Exception,
* version 1.0, a copy of which can be found at
* http://oss.oracle.com/licenses/universal-foss-exception.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU General Public License, version 2.0,
* for more details.
*
* You should have received a copy of the GNU General Public License along with
* this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
package com.mysql.cj.xdevapi;
import java.util.Arrays;
import java.util.List;
import java.util.Set;
import java.util.function.Function;
import java.util.function.Predicate;
import java.util.stream.Collectors;
import com.mysql.cj.Messages;
import com.mysql.cj.MysqlxSession;
import com.mysql.cj.exceptions.ExceptionFactory;
import com.mysql.cj.exceptions.MysqlErrorNumbers;
import com.mysql.cj.exceptions.WrongArgumentException;
import com.mysql.cj.protocol.x.XMessage;
import com.mysql.cj.protocol.x.XMessageBuilder;
import com.mysql.cj.protocol.x.XProtocolError;
import com.mysql.cj.result.StringValueFactory;
import com.mysql.cj.result.ValueFactory;
/**
* {@link Schema} implementation.
*/
public class SchemaImpl implements Schema {
private MysqlxSession mysqlxSession;
private XMessageBuilder xbuilder;
private Session session;
private String name;
private ValueFactory svf;
/* package private */ SchemaImpl(MysqlxSession mysqlxSession, Session session, String name) {
this.mysqlxSession = mysqlxSession;
this.session = session;
this.name = name;
this.xbuilder = (XMessageBuilder) this.mysqlxSession.getMessageBuilder();
this.svf = new StringValueFactory(this.mysqlxSession.getPropertySet());
}
public Session getSession() {
return this.session;
}
public Schema getSchema() {
return this;
}
public String getName() {
return this.name;
}
public DbObjectStatus existsInDatabase() {
StringBuilder stmt = new StringBuilder("select count(*) from information_schema.schemata where schema_name = '");
// TODO: verify quoting rules
stmt.append(this.name.replaceAll("'", "\\'"));
stmt.append("'");
return this.mysqlxSession.getDataStoreMetadata().schemaExists(this.name) ? DbObjectStatus.EXISTS : DbObjectStatus.NOT_EXISTS;
}
public List getCollections() {
return getCollections(null);
}
public List getCollections(String pattern) {
Set strTypes = Arrays.stream(new DbObjectType[] { DbObjectType.COLLECTION }).map(DatabaseObject.DbObjectType::toString)
.collect(Collectors.toSet());
Predicate rowFiler = r -> (strTypes).contains(r.getValue(1, this.svf));
Function rowToName = r -> r.getValue(0, this.svf);
List objectNames = this.mysqlxSession.query(this.xbuilder.buildListObjects(this.name, pattern), rowFiler, rowToName, Collectors.toList());
return objectNames.stream().map(this::getCollection).collect(Collectors.toList());
}
public List
getTables() {
// TODO we need to consider lower_case_table_names server variable for some cases
return getTables(null);
}
public List
getTables(String pattern) {
Set strTypes = Arrays.stream(new DbObjectType[] { DbObjectType.TABLE, DbObjectType.VIEW, DbObjectType.COLLECTION_VIEW })
.map(DatabaseObject.DbObjectType::toString).collect(Collectors.toSet());
Predicate rowFiler = r -> (strTypes).contains(r.getValue(1, this.svf));
Function rowToName = r -> r.getValue(0, this.svf);
List objectNames = this.mysqlxSession.query(this.xbuilder.buildListObjects(this.name, pattern), rowFiler, rowToName, Collectors.toList());
return objectNames.stream().map(this::getTable).collect(Collectors.toList());
}
public Collection getCollection(String collectionName) {
return new CollectionImpl(this.mysqlxSession, this, collectionName);
}
public Collection getCollection(String collectionName, boolean requireExists) {
CollectionImpl coll = new CollectionImpl(this.mysqlxSession, this, collectionName);
if (requireExists && coll.existsInDatabase() != DbObjectStatus.EXISTS) {
throw new WrongArgumentException(coll.toString() + " doesn't exist");
}
return coll;
}
public Table getCollectionAsTable(String collectionName) {
return getTable(collectionName);
}
public Table getTable(String tableName) {
return new TableImpl(this.mysqlxSession, this, tableName);
}
public Table getTable(String tableName, boolean requireExists) {
TableImpl table = new TableImpl(this.mysqlxSession, this, tableName);
if (requireExists && table.existsInDatabase() != DbObjectStatus.EXISTS) {
throw new WrongArgumentException(table.toString() + " doesn't exist");
}
return table;
}
public Collection createCollection(String collectionName) {
this.mysqlxSession.query(this.xbuilder.buildCreateCollection(this.name, collectionName), new UpdateResultBuilder<>());
return new CollectionImpl(this.mysqlxSession, this, collectionName);
}
public Collection createCollection(String collectionName, boolean reuseExisting) {
try {
return createCollection(collectionName);
} catch (XProtocolError ex) {
if (reuseExisting && ex.getErrorCode() == MysqlErrorNumbers.ER_TABLE_EXISTS_ERROR) {
return getCollection(collectionName);
}
throw ex;
}
}
@Override
public Collection createCollection(String collectionName, CreateCollectionOptions options) {
try {
this.mysqlxSession.query(this.xbuilder.buildCreateCollection(this.name, collectionName, options), new UpdateResultBuilder<>());
return new CollectionImpl(this.mysqlxSession, this, collectionName);
} catch (XProtocolError ex) {
if (ex.getErrorCode() == MysqlErrorNumbers.ER_X_CMD_NUM_ARGUMENTS) {
throw ExceptionFactory.createException(WrongArgumentException.class, Messages.getString("Schema.CreateCollection"), ex);
}
throw ex;
}
}
@Override
public void modifyCollection(String collectionName, ModifyCollectionOptions options) {
try {
this.mysqlxSession.query(this.xbuilder.buildModifyCollectionOptions(this.name, collectionName, options), new UpdateResultBuilder<>());
} catch (XProtocolError ex) {
if (ex.getErrorCode() == MysqlErrorNumbers.ER_X_INVALID_ADMIN_COMMAND) {
throw ExceptionFactory.createException(WrongArgumentException.class, Messages.getString("Schema.CreateCollection"), ex);
}
throw ex;
}
}
@Override
public boolean equals(Object other) {
return other != null && other.getClass() == SchemaImpl.class && ((SchemaImpl) other).session == this.session
&& ((SchemaImpl) other).mysqlxSession == this.mysqlxSession && this.name.equals(((SchemaImpl) other).name);
}
@Override
public int hashCode() {
assert false : "hashCode not designed";
return 0;
}
@Override
public String toString() {
StringBuilder sb = new StringBuilder("Schema(");
sb.append(ExprUnparser.quoteIdentifier(this.name));
sb.append(")");
return sb.toString();
}
@Override
public void dropCollection(String collectionName) {
try {
this.mysqlxSession.query(this.xbuilder.buildDropCollection(this.name, collectionName), new UpdateResultBuilder<>());
} catch (XProtocolError e) {
// If specified object does not exist, dropX() methods succeed (no error is reported)
// TODO check MySQL > 8.0.1 for built in solution, like passing ifExists to dropView
if (e.getErrorCode() != MysqlErrorNumbers.ER_BAD_TABLE_ERROR) {
throw e;
}
}
}
}
