AMashenkov commented on a change in pull request #339: URL: https://github.com/apache/ignite-3/pull/339#discussion_r710130609
########## File path: modules/client/src/main/java/org/apache/ignite/internal/jdbc/JdbcDatabaseMetadata.java ########## @@ -0,0 +1,1529 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed with + * this work for additional information regarding copyright ownership. + * The ASF licenses this file to You 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 + * + * 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. + */ + +package org.apache.ignite.internal.jdbc; + +import java.sql.Connection; +import java.sql.DatabaseMetaData; +import java.sql.ResultSet; +import java.sql.RowIdLifetime; +import java.sql.SQLException; +import java.sql.Types; +import java.util.ArrayList; +import java.util.Arrays; +import java.util.Collections; +import java.util.LinkedList; +import java.util.List; +import org.apache.ignite.client.proto.query.IgniteQueryErrorCode; +import org.apache.ignite.client.proto.query.event.JdbcColumnMeta; +import org.apache.ignite.client.proto.query.event.JdbcMetaColumnsRequest; +import org.apache.ignite.client.proto.query.event.JdbcMetaColumnsResult; +import org.apache.ignite.client.proto.query.event.JdbcMetaPrimaryKeysRequest; +import org.apache.ignite.client.proto.query.event.JdbcMetaPrimaryKeysResult; +import org.apache.ignite.client.proto.query.event.JdbcMetaSchemasRequest; +import org.apache.ignite.client.proto.query.event.JdbcMetaSchemasResult; +import org.apache.ignite.client.proto.query.event.JdbcMetaTablesRequest; +import org.apache.ignite.client.proto.query.event.JdbcMetaTablesResult; +import org.apache.ignite.client.proto.query.event.JdbcPrimaryKeyMeta; +import org.apache.ignite.client.proto.query.event.JdbcTableMeta; +import org.apache.ignite.internal.client.proto.ProtocolVersion; + +import static java.sql.Connection.TRANSACTION_NONE; +import static java.sql.ResultSet.CONCUR_READ_ONLY; +import static java.sql.ResultSet.HOLD_CURSORS_OVER_COMMIT; +import static java.sql.ResultSet.TYPE_FORWARD_ONLY; +import static java.sql.RowIdLifetime.ROWID_UNSUPPORTED; +import static java.util.Arrays.asList; +import static java.util.Collections.singletonList; + +/** + * JDBC database metadata implementation. + */ +public class JdbcDatabaseMetadata implements DatabaseMetaData { + /** Driver name. */ + public static final String DRIVER_NAME = "Apache Ignite JDBC Driver"; + + /** The only possible name for catalog. */ + public static final String CATALOG_NAME = "IGNITE"; + + /** Name of TABLE type. */ + public static final String TYPE_TABLE = "TABLE"; + + /** Connection. */ + private final JdbcConnection conn; + + /** + * Constructor. + * + * @param conn Connection. + */ + JdbcDatabaseMetadata(JdbcConnection conn) { + this.conn = conn; + } + + /** {@inheritDoc} */ + @Override public boolean allProceduresAreCallable() { + return true; + } + + /** {@inheritDoc} */ + @Override public boolean allTablesAreSelectable() { + return true; + } + + /** {@inheritDoc} */ + @Override public String getURL() { + return conn.url(); + } + + /** {@inheritDoc} */ + @Override public String getUserName() { + return ""; + } + + /** {@inheritDoc} */ + @Override public boolean isReadOnly() { + return false; + } + + /** {@inheritDoc} */ + @Override public boolean nullsAreSortedHigh() { + return false; + } + + /** {@inheritDoc} */ + @Override public boolean nullsAreSortedLow() { + return true; + } + + /** {@inheritDoc} */ + @Override public boolean nullsAreSortedAtStart() { + return false; + } + + /** {@inheritDoc} */ + @Override public boolean nullsAreSortedAtEnd() { + return true; + } + + /** {@inheritDoc} */ + @Override public String getDatabaseProductName() { + return "Apache Ignite"; + } + + /** {@inheritDoc} */ + @Override public String getDatabaseProductVersion() { + return ProtocolVersion.LATEST_VER.toString(); + } + + /** {@inheritDoc} */ + @Override public String getDriverName() { + return DRIVER_NAME; + } + + /** {@inheritDoc} */ + @Override public String getDriverVersion() { + return ProtocolVersion.LATEST_VER.toString(); + } + + /** {@inheritDoc} */ + @Override public int getDriverMajorVersion() { + return ProtocolVersion.LATEST_VER.major(); + } + + /** {@inheritDoc} */ + @Override public int getDriverMinorVersion() { + return ProtocolVersion.LATEST_VER.minor(); + } + + /** {@inheritDoc} */ + @Override public boolean usesLocalFiles() { + return false; + } + + /** {@inheritDoc} */ + @Override public boolean usesLocalFilePerTable() { + return false; + } + + /** {@inheritDoc} */ + @Override public boolean supportsMixedCaseIdentifiers() { + return false; + } + + /** {@inheritDoc} */ + @Override public boolean storesUpperCaseIdentifiers() { + return true; + } + + /** {@inheritDoc} */ + @Override public boolean storesLowerCaseIdentifiers() { + return false; + } + + /** {@inheritDoc} */ + @Override public boolean storesMixedCaseIdentifiers() { + return false; + } + + /** {@inheritDoc} */ + @Override public boolean supportsMixedCaseQuotedIdentifiers() { + return false; + } + + /** {@inheritDoc} */ + @Override public boolean storesUpperCaseQuotedIdentifiers() { + return true; + } + + /** {@inheritDoc} */ + @Override public boolean storesLowerCaseQuotedIdentifiers() { + return false; + } + + /** {@inheritDoc} */ + @Override public boolean storesMixedCaseQuotedIdentifiers() { + return true; + } + + /** {@inheritDoc} */ + @Override public String getIdentifierQuoteString() { + return "\""; + } + + /** {@inheritDoc} */ + @Override public String getSQLKeywords() { + return ""; + } + + /** {@inheritDoc} */ + @Override public String getNumericFunctions() { + return ""; + } + + /** {@inheritDoc} */ + @Override public String getStringFunctions() { + return ""; + } + + /** {@inheritDoc} */ + @Override public String getSystemFunctions() { + return ""; + } + + /** {@inheritDoc} */ + @Override public String getTimeDateFunctions() { + return ""; + } + + /** {@inheritDoc} */ + @Override public String getSearchStringEscape() { + return "\\"; + } + + /** {@inheritDoc} */ + @Override public String getExtraNameCharacters() { + return ""; + } + + /** {@inheritDoc} */ + @Override public boolean supportsAlterTableWithAddColumn() { + return true; + } + + /** {@inheritDoc} */ + @Override public boolean supportsAlterTableWithDropColumn() { + return true; + } + + /** {@inheritDoc} */ + @Override public boolean supportsColumnAliasing() { + return true; + } + + /** {@inheritDoc} */ + @Override public boolean nullPlusNonNullIsNull() { + return true; + } + + /** {@inheritDoc} */ + @Override public boolean supportsConvert() { + return true; + } + + /** {@inheritDoc} */ + @Override public boolean supportsConvert(int fromType, int toType) { + return true; + } + + /** {@inheritDoc} */ + @Override public boolean supportsTableCorrelationNames() { + return true; + } + + /** {@inheritDoc} */ + @Override public boolean supportsDifferentTableCorrelationNames() { + return true; + } + + /** {@inheritDoc} */ + @Override public boolean supportsExpressionsInOrderBy() { + return true; + } + + /** {@inheritDoc} */ + @Override public boolean supportsOrderByUnrelated() { + return true; + } + + /** {@inheritDoc} */ + @Override public boolean supportsGroupBy() { + return true; + } + + /** {@inheritDoc} */ + @Override public boolean supportsGroupByUnrelated() { + return true; + } + + /** {@inheritDoc} */ + @Override public boolean supportsGroupByBeyondSelect() { + return true; + } + + /** {@inheritDoc} */ + @Override public boolean supportsLikeEscapeClause() { + return true; + } + + /** {@inheritDoc} */ + @Override public boolean supportsMultipleResultSets() { + return true; + } + + /** {@inheritDoc} */ + @Override public boolean supportsMultipleTransactions() { + return false; + } + + /** {@inheritDoc} */ + @Override public boolean supportsNonNullableColumns() { + return false; + } + + /** {@inheritDoc} */ + @Override public boolean supportsMinimumSQLGrammar() { + return false; + } + + /** {@inheritDoc} */ + @Override public boolean supportsCoreSQLGrammar() { + return true; + } + + /** {@inheritDoc} */ + @Override public boolean supportsExtendedSQLGrammar() { + return false; + } + + /** {@inheritDoc} */ + @Override public boolean supportsANSI92EntryLevelSQL() { + return true; Review comment: I'm not sure =) -- This is an automated message from the Apache Git Service. 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