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Shaded version of Apache Hive JDBC driver for Trino
/**
* 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.hive.jdbc;
import java.io.FileInputStream;
import java.io.IOException;
import java.security.KeyStore;
import java.sql.Array;
import java.sql.Blob;
import java.sql.CallableStatement;
import java.sql.Clob;
import java.sql.Connection;
import java.sql.DatabaseMetaData;
import java.sql.DriverManager;
import java.sql.NClob;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLClientInfoException;
import java.sql.SQLException;
import java.sql.SQLWarning;
import java.sql.SQLXML;
import java.sql.Savepoint;
import java.sql.Statement;
import java.sql.Struct;
import java.util.HashMap;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Properties;
import java.util.concurrent.Executor;
import java.util.concurrent.TimeUnit;
import javax.security.sasl.Sasl;
import javax.security.sasl.SaslException;
import io.trino.hive.jdbc.$internal.org.apache.commons.logging.Log;
import io.trino.hive.jdbc.$internal.org.apache.commons.logging.LogFactory;
import io.trino.hive.jdbc.$internal.org.apache.hadoop.hive.ql.session.SessionState;
import io.trino.hive.jdbc.$internal.org.apache.hadoop.hive.shims.ShimLoader;
import io.trino.hive.jdbc.$internal.org.apache.hive.service.auth.HiveAuthFactory;
import io.trino.hive.jdbc.$internal.org.apache.hive.service.auth.KerberosSaslHelper;
import io.trino.hive.jdbc.$internal.org.apache.hive.service.auth.PlainSaslHelper;
import io.trino.hive.jdbc.$internal.org.apache.hive.service.auth.SaslQOP;
import io.trino.hive.jdbc.$internal.org.apache.hive.service.cli.thrift.EmbeddedThriftBinaryCLIService;
import io.trino.hive.jdbc.$internal.org.apache.hive.service.cli.thrift.TCLIService;
import io.trino.hive.jdbc.$internal.org.apache.hive.service.cli.thrift.TCancelDelegationTokenReq;
import io.trino.hive.jdbc.$internal.org.apache.hive.service.cli.thrift.TCancelDelegationTokenResp;
import io.trino.hive.jdbc.$internal.org.apache.hive.service.cli.thrift.TCloseSessionReq;
import io.trino.hive.jdbc.$internal.org.apache.hive.service.cli.thrift.TGetDelegationTokenReq;
import io.trino.hive.jdbc.$internal.org.apache.hive.service.cli.thrift.TGetDelegationTokenResp;
import io.trino.hive.jdbc.$internal.org.apache.hive.service.cli.thrift.TOpenSessionReq;
import io.trino.hive.jdbc.$internal.org.apache.hive.service.cli.thrift.TOpenSessionResp;
import io.trino.hive.jdbc.$internal.org.apache.hive.service.cli.thrift.TProtocolVersion;
import io.trino.hive.jdbc.$internal.org.apache.hive.service.cli.thrift.TRenewDelegationTokenReq;
import io.trino.hive.jdbc.$internal.org.apache.hive.service.cli.thrift.TRenewDelegationTokenResp;
import io.trino.hive.jdbc.$internal.org.apache.hive.service.cli.thrift.TSessionHandle;
import org.apache.http.HttpRequestInterceptor;
import org.apache.http.conn.scheme.Scheme;
import org.apache.http.conn.ssl.SSLSocketFactory;
import org.apache.http.impl.client.DefaultHttpClient;
import io.trino.hive.jdbc.$internal.org.apache.thrift.TException;
import io.trino.hive.jdbc.$internal.org.apache.thrift.protocol.TBinaryProtocol;
import io.trino.hive.jdbc.$internal.org.apache.thrift.transport.THttpClient;
import io.trino.hive.jdbc.$internal.org.apache.thrift.transport.TTransport;
import io.trino.hive.jdbc.$internal.org.apache.thrift.transport.TTransportException;
/**
* HiveConnection.
*
*/
public class HiveConnection implements java.sql.Connection {
public static final Log LOG = LogFactory.getLog(HiveConnection.class.getName());
private static final String HIVE_AUTH_TYPE= "auth";
private static final String HIVE_AUTH_QOP = "sasl.qop";
private static final String HIVE_AUTH_SIMPLE = "noSasl";
private static final String HIVE_AUTH_TOKEN = "delegationToken";
private static final String HIVE_AUTH_USER = "user";
private static final String HIVE_AUTH_PRINCIPAL = "principal";
private static final String HIVE_AUTH_PASSWD = "password";
private static final String HIVE_AUTH_KERBEROS_AUTH_TYPE = "kerberosAuthType";
private static final String HIVE_AUTH_KERBEROS_AUTH_TYPE_FROM_SUBJECT = "fromSubject";
private static final String HIVE_ANONYMOUS_USER = "anonymous";
private static final String HIVE_ANONYMOUS_PASSWD = "anonymous";
private static final String HIVE_USE_SSL = "ssl";
private static final String HIVE_SSL_TRUST_STORE = "sslTrustStore";
private static final String HIVE_SSL_TRUST_STORE_PASSWORD = "trustStorePassword";
private static final String HIVE_SERVER2_TRANSPORT_MODE = "hive.server2.transport.mode";
private static final String HIVE_SERVER2_THRIFT_HTTP_PATH = "hive.server2.thrift.http.path";
private static final String HIVE_VAR_PREFIX = "hivevar:";
private static final String HIVE_CONF_PREFIX = "hiveconf:";
// Currently supports JKS keystore format
// See HIVE-6286 (Add support for PKCS12 keystore format)
private static final String HIVE_SSL_TRUST_STORE_TYPE = "JKS";
private final String jdbcURI;
private final String host;
private final int port;
private final Map sessConfMap;
private final Map hiveConfMap;
private final Map hiveVarMap;
private final boolean isEmbeddedMode;
private TTransport transport;
private TCLIService.Iface client; // todo should be replaced by CliServiceClient
private boolean isClosed = true;
private SQLWarning warningChain = null;
private TSessionHandle sessHandle = null;
private final List supportedProtocols = new LinkedList();
private int loginTimeout = 0;
private TProtocolVersion protocol;
public HiveConnection(String uri, Properties info) throws SQLException {
setupLoginTimeout();
jdbcURI = uri;
// parse the connection uri
Utils.JdbcConnectionParams connParams;
try {
connParams = Utils.parseURL(uri);
} catch (IllegalArgumentException e) {
throw new SQLException(e);
}
// extract parsed connection parameters:
// JDBC URL: jdbc:hive2://:/dbName;sess_var_list?hive_conf_list#hive_var_list
// each list: =;= and so on
// sess_var_list -> sessConfMap
// hive_conf_list -> hiveConfMap
// hive_var_list -> hiveVarMap
host = connParams.getHost();
port = connParams.getPort();
sessConfMap = connParams.getSessionVars();
hiveConfMap = connParams.getHiveConfs();
hiveVarMap = connParams.getHiveVars();
for (Map.Entry kv : info.entrySet()) {
if ((kv.getKey() instanceof String)) {
String key = (String) kv.getKey();
if (key.startsWith(HIVE_VAR_PREFIX)) {
hiveVarMap.put(key.substring(HIVE_VAR_PREFIX.length()), info.getProperty(key));
} else if (key.startsWith(HIVE_CONF_PREFIX)) {
hiveConfMap.put(key.substring(HIVE_CONF_PREFIX.length()), info.getProperty(key));
}
}
}
isEmbeddedMode = connParams.isEmbeddedMode();
if (isEmbeddedMode) {
client = new EmbeddedThriftBinaryCLIService();
} else {
// extract user/password from JDBC connection properties if its not supplied in the
// connection URL
if (info.containsKey(HIVE_AUTH_USER)) {
sessConfMap.put(HIVE_AUTH_USER, info.getProperty(HIVE_AUTH_USER));
if (info.containsKey(HIVE_AUTH_PASSWD)) {
sessConfMap.put(HIVE_AUTH_PASSWD, info.getProperty(HIVE_AUTH_PASSWD));
}
}
if (info.containsKey(HIVE_AUTH_TYPE)) {
sessConfMap.put(HIVE_AUTH_TYPE, info.getProperty(HIVE_AUTH_TYPE));
}
// open the client transport
openTransport();
// set up the client
client = new TCLIService.Client(new TBinaryProtocol(transport));
}
// add supported protocols
supportedProtocols.add(TProtocolVersion.HIVE_CLI_SERVICE_PROTOCOL_V1);
supportedProtocols.add(TProtocolVersion.HIVE_CLI_SERVICE_PROTOCOL_V2);
supportedProtocols.add(TProtocolVersion.HIVE_CLI_SERVICE_PROTOCOL_V3);
supportedProtocols.add(TProtocolVersion.HIVE_CLI_SERVICE_PROTOCOL_V4);
supportedProtocols.add(TProtocolVersion.HIVE_CLI_SERVICE_PROTOCOL_V5);
supportedProtocols.add(TProtocolVersion.HIVE_CLI_SERVICE_PROTOCOL_V6);
supportedProtocols.add(TProtocolVersion.HIVE_CLI_SERVICE_PROTOCOL_V7);
// open client session
openSession(connParams.getSessionVars());
configureConnection(connParams.getDbName());
}
private void openTransport() throws SQLException {
// TODO: Refactor transport creation to a factory, it's getting uber messy here
transport = isHttpTransportMode() ? createHttpTransport() : createBinaryTransport();
try {
if (!transport.isOpen()) {
transport.open();
}
} catch (TTransportException e) {
throw new SQLException("Could not open connection to "
+ jdbcURI + ": " + e.getMessage(), " 08S01", e);
}
}
private String getServerHttpUrl(boolean useSsl) {
// Create the http/https url
// JDBC driver will set up an https url if ssl is enabled, otherwise http
String schemeName = useSsl ? "https" : "http";
// http path should begin with "/"
String httpPath;
httpPath = hiveConfMap.get(HIVE_SERVER2_THRIFT_HTTP_PATH);
if(httpPath == null) {
httpPath = "/";
}
else if(!httpPath.startsWith("/")) {
httpPath = "/" + httpPath;
}
return schemeName + "://" + host + ":" + port + httpPath;
}
private TTransport createHttpTransport() throws SQLException {
DefaultHttpClient httpClient;
boolean useSsl = isSslConnection();
// Create an http client from the configs
try {
httpClient = getHttpClient(useSsl);
} catch (Exception e) {
String msg = "Could not create http connection to " +
jdbcURI + ". " + e.getMessage();
throw new SQLException(msg, " 08S01", e);
}
try {
transport = new THttpClient(getServerHttpUrl(useSsl), httpClient);
}
catch (TTransportException e) {
String msg = "Could not create http connection to " +
jdbcURI + ". " + e.getMessage();
throw new SQLException(msg, " 08S01", e);
}
return transport;
}
private DefaultHttpClient getHttpClient(Boolean useSsl) throws SQLException {
DefaultHttpClient httpClient = new DefaultHttpClient();
// Request interceptor for any request pre-processing logic
HttpRequestInterceptor requestInterceptor;
// If Kerberos
if (isKerberosAuthMode()) {
if (useSsl) {
String msg = "SSL encryption is currently not supported with " +
"kerberos authentication";
throw new SQLException(msg, " 08S01");
}
/**
* Add an interceptor which sets the appropriate header in the request.
* It does the kerberos authentication and get the final service ticket,
* for sending to the server before every request.
*/
requestInterceptor = new HttpKerberosRequestInterceptor(
sessConfMap.get(HIVE_AUTH_PRINCIPAL), host, getServerHttpUrl(false));
}
else {
/**
* Add an interceptor to pass username/password in the header.
* In https mode, the entire information is encrypted
*/
requestInterceptor = new HttpBasicAuthInterceptor(getUserName(), getPassword());
// Configure httpClient for SSL
if (useSsl) {
String sslTrustStorePath = sessConfMap.get(HIVE_SSL_TRUST_STORE);
String sslTrustStorePassword = sessConfMap.get(
HIVE_SSL_TRUST_STORE_PASSWORD);
KeyStore sslTrustStore;
SSLSocketFactory socketFactory;
try {
if (sslTrustStorePath == null || sslTrustStorePath.isEmpty()) {
// Create a default socket factory based on standard JSSE trust material
socketFactory = SSLSocketFactory.getSocketFactory();
}
else {
// Pick trust store config from the given path
sslTrustStore = KeyStore.getInstance(HIVE_SSL_TRUST_STORE_TYPE);
sslTrustStore.load(new FileInputStream(sslTrustStorePath),
sslTrustStorePassword.toCharArray());
socketFactory = new SSLSocketFactory(sslTrustStore);
}
socketFactory.setHostnameVerifier(SSLSocketFactory.ALLOW_ALL_HOSTNAME_VERIFIER);
Scheme sslScheme = new Scheme("https", 443, socketFactory);
httpClient.getConnectionManager().getSchemeRegistry().register(sslScheme);
}
catch (Exception e) {
String msg = "Could not create an https connection to " +
jdbcURI + ". " + e.getMessage();
throw new SQLException(msg, " 08S01", e);
}
}
}
httpClient.addRequestInterceptor(requestInterceptor);
return httpClient;
}
/**
* Create transport per the connection options
* Supported transport options are:
* - SASL based transports over
* + Kerberos
* + Delegation token
* + SSL
* + non-SSL
* - Raw (non-SASL) socket
*
* Kerberos and Delegation token supports SASL QOP configurations
*/
private TTransport createBinaryTransport() throws SQLException {
try {
// handle secure connection if specified
if (!HIVE_AUTH_SIMPLE.equals(sessConfMap.get(HIVE_AUTH_TYPE))) {
// If Kerberos
Map saslProps = new HashMap();
SaslQOP saslQOP = SaslQOP.AUTH;
if (sessConfMap.containsKey(HIVE_AUTH_PRINCIPAL)) {
if (sessConfMap.containsKey(HIVE_AUTH_QOP)) {
try {
saslQOP = SaslQOP.fromString(sessConfMap.get(HIVE_AUTH_QOP));
} catch (IllegalArgumentException e) {
throw new SQLException("Invalid " + HIVE_AUTH_QOP +
" parameter. " + e.getMessage(), "42000", e);
}
}
saslProps.put(Sasl.QOP, saslQOP.toString());
saslProps.put(Sasl.SERVER_AUTH, "true");
boolean assumeSubject = HIVE_AUTH_KERBEROS_AUTH_TYPE_FROM_SUBJECT.equals(sessConfMap.get(HIVE_AUTH_KERBEROS_AUTH_TYPE));
transport = KerberosSaslHelper.getKerberosTransport(
sessConfMap.get(HIVE_AUTH_PRINCIPAL), host,
HiveAuthFactory.getSocketTransport(host, port, loginTimeout), saslProps, assumeSubject);
} else {
// If there's a delegation token available then use token based connection
String tokenStr = getClientDelegationToken(sessConfMap);
if (tokenStr != null) {
transport = KerberosSaslHelper.getTokenTransport(tokenStr,
host, HiveAuthFactory.getSocketTransport(host, port, loginTimeout), saslProps);
} else {
// we are using PLAIN Sasl connection with user/password
String userName = getUserName();
String passwd = getPassword();
if (isSslConnection()) {
// get SSL socket
String sslTrustStore = sessConfMap.get(HIVE_SSL_TRUST_STORE);
String sslTrustStorePassword = sessConfMap.get(HIVE_SSL_TRUST_STORE_PASSWORD);
if (sslTrustStore == null || sslTrustStore.isEmpty()) {
transport = HiveAuthFactory.getSSLSocket(host, port, loginTimeout);
} else {
transport = HiveAuthFactory.getSSLSocket(host, port, loginTimeout,
sslTrustStore, sslTrustStorePassword);
}
} else {
// get non-SSL socket transport
transport = HiveAuthFactory.getSocketTransport(host, port, loginTimeout);
}
// Overlay the SASL transport on top of the base socket transport (SSL or non-SSL)
transport = PlainSaslHelper.getPlainTransport(userName, passwd, transport);
}
}
} else {
// Raw socket connection (non-sasl)
transport = HiveAuthFactory.getSocketTransport(host, port, loginTimeout);
}
} catch (SaslException e) {
throw new SQLException("Could not create secure connection to "
+ jdbcURI + ": " + e.getMessage(), " 08S01", e);
} catch (TTransportException e) {
throw new SQLException("Could not create connection to "
+ jdbcURI + ": " + e.getMessage(), " 08S01", e);
}
return transport;
}
// Lookup the delegation token. First in the connection URL, then Configuration
private String getClientDelegationToken(Map jdbcConnConf)
throws SQLException {
String tokenStr = null;
if (HIVE_AUTH_TOKEN.equalsIgnoreCase(jdbcConnConf.get(HIVE_AUTH_TYPE))) {
// check delegation token in job conf if any
try {
tokenStr = ShimLoader.getHadoopShims().
getTokenStrForm(HiveAuthFactory.HS2_CLIENT_TOKEN);
} catch (IOException e) {
throw new SQLException("Error reading token ", e);
}
}
return tokenStr;
}
private void openSession(Map sessVars) throws SQLException {
TOpenSessionReq openReq = new TOpenSessionReq();
// set the session configuration
if (sessVars.containsKey(HiveAuthFactory.HS2_PROXY_USER)) {
Map openConf = new HashMap();
openConf.put(HiveAuthFactory.HS2_PROXY_USER,
sessVars.get(HiveAuthFactory.HS2_PROXY_USER));
openReq.setConfiguration(openConf);
}
try {
TOpenSessionResp openResp = client.OpenSession(openReq);
// validate connection
Utils.verifySuccess(openResp.getStatus());
if (!supportedProtocols.contains(openResp.getServerProtocolVersion())) {
throw new TException("Unsupported Hive2 protocol");
}
protocol = openResp.getServerProtocolVersion();
sessHandle = openResp.getSessionHandle();
} catch (TException e) {
LOG.error("Error opening session", e);
throw new SQLException("Could not establish connection to "
+ jdbcURI + ": " + e.getMessage(), " 08S01", e);
}
isClosed = false;
}
private void configureConnection(String dbName) throws SQLException {
// set the hive variable in session state for local mode
if (isEmbeddedMode) {
if (!hiveVarMap.isEmpty()) {
SessionState.get().setHiveVariables(hiveVarMap);
}
} else {
// for remote JDBC client, try to set the conf var using 'set foo=bar'
Statement stmt = createStatement();
for (Entry hiveConf : hiveConfMap.entrySet()) {
stmt.execute("set " + hiveConf.getKey() + "=" + hiveConf.getValue());
}
// For remote JDBC client, try to set the hive var using 'set hivevar:key=value'
for (Entry hiveVar : hiveVarMap.entrySet()) {
stmt.execute("set hivevar:" + hiveVar.getKey() + "=" + hiveVar.getValue());
}
// if the client is setting a non-default db, then switch the database
if (!Utils.DEFAULT_DATABASE.equalsIgnoreCase(dbName)) {
stmt.execute("use " + dbName);
}
stmt.close();
}
}
/**
* @return username from sessConfMap
*/
private String getUserName() {
return getSessionValue(HIVE_AUTH_USER, HIVE_ANONYMOUS_USER);
}
/**
* @return password from sessConfMap
*/
private String getPassword() {
return getSessionValue(HIVE_AUTH_PASSWD, HIVE_ANONYMOUS_PASSWD);
}
private boolean isSslConnection() {
return "true".equalsIgnoreCase(sessConfMap.get(HIVE_USE_SSL));
}
private boolean isKerberosAuthMode() {
return !HIVE_AUTH_SIMPLE.equals(sessConfMap.get(HIVE_AUTH_TYPE))
&& sessConfMap.containsKey(HIVE_AUTH_PRINCIPAL);
}
private boolean isHttpTransportMode() {
String transportMode = hiveConfMap.get(HIVE_SERVER2_TRANSPORT_MODE);
if(transportMode != null && (transportMode.equalsIgnoreCase("http"))) {
return true;
}
return false;
}
/**
* Lookup varName in sessConfMap, if its null or empty return the default
* value varDefault
* @param varName
* @param varDefault
* @return
*/
private String getSessionValue(String varName, String varDefault) {
String varValue = sessConfMap.get(varName);
if ((varValue == null) || varValue.isEmpty()) {
varValue = varDefault;
}
return varValue;
}
// copy loginTimeout from driver manager. Thrift timeout needs to be in millis
private void setupLoginTimeout() {
long timeOut = TimeUnit.SECONDS.toMillis(DriverManager.getLoginTimeout());
if (timeOut > Integer.MAX_VALUE) {
loginTimeout = Integer.MAX_VALUE;
} else {
loginTimeout = (int) timeOut;
}
}
public void abort(Executor executor) throws SQLException {
// JDK 1.7
throw new SQLException("Method not supported");
}
public String getDelegationToken(String owner, String renewer) throws SQLException {
TGetDelegationTokenReq req = new TGetDelegationTokenReq(sessHandle, owner, renewer);
try {
TGetDelegationTokenResp tokenResp = client.GetDelegationToken(req);
Utils.verifySuccess(tokenResp.getStatus());
return tokenResp.getDelegationToken();
} catch (TException e) {
throw new SQLException("Could not retrieve token: " +
e.getMessage(), " 08S01", e);
}
}
public void cancelDelegationToken(String tokenStr) throws SQLException {
TCancelDelegationTokenReq cancelReq = new TCancelDelegationTokenReq(sessHandle, tokenStr);
try {
TCancelDelegationTokenResp cancelResp =
client.CancelDelegationToken(cancelReq);
Utils.verifySuccess(cancelResp.getStatus());
return;
} catch (TException e) {
throw new SQLException("Could not cancel token: " +
e.getMessage(), " 08S01", e);
}
}
public void renewDelegationToken(String tokenStr) throws SQLException {
TRenewDelegationTokenReq cancelReq = new TRenewDelegationTokenReq(sessHandle, tokenStr);
try {
TRenewDelegationTokenResp renewResp =
client.RenewDelegationToken(cancelReq);
Utils.verifySuccess(renewResp.getStatus());
return;
} catch (TException e) {
throw new SQLException("Could not renew token: " +
e.getMessage(), " 08S01", e);
}
}
/*
* (non-Javadoc)
*
* @see java.sql.Connection#clearWarnings()
*/
@Override
public void clearWarnings() throws SQLException {
warningChain = null;
}
/*
* (non-Javadoc)
*
* @see java.sql.Connection#close()
*/
@Override
public void close() throws SQLException {
if (!isClosed) {
TCloseSessionReq closeReq = new TCloseSessionReq(sessHandle);
try {
client.CloseSession(closeReq);
} catch (TException e) {
throw new SQLException("Error while cleaning up the server resources", e);
} finally {
isClosed = true;
if (transport != null) {
transport.close();
}
}
}
}
/*
* (non-Javadoc)
*
* @see java.sql.Connection#commit()
*/
@Override
public void commit() throws SQLException {
// TODO Auto-generated method stub
throw new SQLException("Method not supported");
}
/*
* (non-Javadoc)
*
* @see java.sql.Connection#createArrayOf(java.lang.String,
* java.lang.Object[])
*/
@Override
public Array createArrayOf(String arg0, Object[] arg1) throws SQLException {
// TODO Auto-generated method stub
throw new SQLException("Method not supported");
}
/*
* (non-Javadoc)
*
* @see java.sql.Connection#createBlob()
*/
@Override
public Blob createBlob() throws SQLException {
// TODO Auto-generated method stub
throw new SQLException("Method not supported");
}
/*
* (non-Javadoc)
*
* @see java.sql.Connection#createClob()
*/
@Override
public Clob createClob() throws SQLException {
// TODO Auto-generated method stub
throw new SQLException("Method not supported");
}
/*
* (non-Javadoc)
*
* @see java.sql.Connection#createNClob()
*/
@Override
public NClob createNClob() throws SQLException {
// TODO Auto-generated method stub
throw new SQLException("Method not supported");
}
/*
* (non-Javadoc)
*
* @see java.sql.Connection#createSQLXML()
*/
@Override
public SQLXML createSQLXML() throws SQLException {
// TODO Auto-generated method stub
throw new SQLException("Method not supported");
}
/**
* Creates a Statement object for sending SQL statements to the database.
*
* @throws SQLException
* if a database access error occurs.
* @see java.sql.Connection#createStatement()
*/
@Override
public Statement createStatement() throws SQLException {
if (isClosed) {
throw new SQLException("Can't create Statement, connection is closed");
}
return new HiveStatement(this, client, sessHandle);
}
/*
* (non-Javadoc)
*
* @see java.sql.Connection#createStatement(int, int)
*/
@Override
public Statement createStatement(int resultSetType, int resultSetConcurrency)
throws SQLException {
if (resultSetConcurrency != ResultSet.CONCUR_READ_ONLY) {
throw new SQLException("Statement with resultset concurrency " +
resultSetConcurrency + " is not supported", "HYC00"); // Optional feature not implemented
}
if (resultSetType == ResultSet.TYPE_SCROLL_SENSITIVE) {
throw new SQLException("Statement with resultset type " + resultSetType +
" is not supported", "HYC00"); // Optional feature not implemented
}
return new HiveStatement(this, client, sessHandle,
resultSetType == ResultSet.TYPE_SCROLL_INSENSITIVE);
}
/*
* (non-Javadoc)
*
* @see java.sql.Connection#createStatement(int, int, int)
*/
@Override
public Statement createStatement(int resultSetType, int resultSetConcurrency,
int resultSetHoldability) throws SQLException {
// TODO Auto-generated method stub
throw new SQLException("Method not supported");
}
/*
* (non-Javadoc)
*
* @see java.sql.Connection#createStruct(java.lang.String, java.lang.Object[])
*/
@Override
public Struct createStruct(String typeName, Object[] attributes)
throws SQLException {
// TODO Auto-generated method stub
throw new SQLException("Method not supported");
}
/*
* (non-Javadoc)
*
* @see java.sql.Connection#getAutoCommit()
*/
@Override
public boolean getAutoCommit() throws SQLException {
return true;
}
/*
* (non-Javadoc)
*
* @see java.sql.Connection#getCatalog()
*/
@Override
public String getCatalog() throws SQLException {
return "";
}
/*
* (non-Javadoc)
*
* @see java.sql.Connection#getClientInfo()
*/
@Override
public Properties getClientInfo() throws SQLException {
// TODO Auto-generated method stub
throw new SQLException("Method not supported");
}
/*
* (non-Javadoc)
*
* @see java.sql.Connection#getClientInfo(java.lang.String)
*/
@Override
public String getClientInfo(String name) throws SQLException {
// TODO Auto-generated method stub
throw new SQLException("Method not supported");
}
/*
* (non-Javadoc)
*
* @see java.sql.Connection#getHoldability()
*/
@Override
public int getHoldability() throws SQLException {
// TODO Auto-generated method stub
throw new SQLException("Method not supported");
}
/*
* (non-Javadoc)
*
* @see java.sql.Connection#getMetaData()
*/
@Override
public DatabaseMetaData getMetaData() throws SQLException {
if (isClosed) {
throw new SQLException("Connection is closed");
}
return new HiveDatabaseMetaData(this, client, sessHandle);
}
public int getNetworkTimeout() throws SQLException {
// JDK 1.7
throw new SQLException("Method not supported");
}
public String getSchema() throws SQLException {
if (isClosed) {
throw new SQLException("Connection is closed");
}
Statement stmt = createStatement();
ResultSet res = stmt.executeQuery("SELECT current_database()");
if (!res.next()) {
throw new SQLException("Failed to get schema information");
}
String schemaName = res.getString(1);
res.close();
stmt.close();
return schemaName;
}
/*
* (non-Javadoc)
*
* @see java.sql.Connection#getTransactionIsolation()
*/
@Override
public int getTransactionIsolation() throws SQLException {
return Connection.TRANSACTION_NONE;
}
/*
* (non-Javadoc)
*
* @see java.sql.Connection#getTypeMap()
*/
@Override
public Map> getTypeMap() throws SQLException {
// TODO Auto-generated method stub
throw new SQLException("Method not supported");
}
/*
* (non-Javadoc)
*
* @see java.sql.Connection#getWarnings()
*/
@Override
public SQLWarning getWarnings() throws SQLException {
return warningChain;
}
/*
* (non-Javadoc)
*
* @see java.sql.Connection#isClosed()
*/
@Override
public boolean isClosed() throws SQLException {
return isClosed;
}
/*
* (non-Javadoc)
*
* @see java.sql.Connection#isReadOnly()
*/
@Override
public boolean isReadOnly() throws SQLException {
return false;
}
/*
* (non-Javadoc)
*
* @see java.sql.Connection#isValid(int)
*/
@Override
public boolean isValid(int timeout) throws SQLException {
// TODO Auto-generated method stub
throw new SQLException("Method not supported");
}
/*
* (non-Javadoc)
*
* @see java.sql.Connection#nativeSQL(java.lang.String)
*/
@Override
public String nativeSQL(String sql) throws SQLException {
// TODO Auto-generated method stub
throw new SQLException("Method not supported");
}
/*
* (non-Javadoc)
*
* @see java.sql.Connection#prepareCall(java.lang.String)
*/
@Override
public CallableStatement prepareCall(String sql) throws SQLException {
// TODO Auto-generated method stub
throw new SQLException("Method not supported");
}
/*
* (non-Javadoc)
*
* @see java.sql.Connection#prepareCall(java.lang.String, int, int)
*/
@Override
public CallableStatement prepareCall(String sql, int resultSetType,
int resultSetConcurrency) throws SQLException {
// TODO Auto-generated method stub
throw new SQLException("Method not supported");
}
/*
* (non-Javadoc)
*
* @see java.sql.Connection#prepareCall(java.lang.String, int, int, int)
*/
@Override
public CallableStatement prepareCall(String sql, int resultSetType,
int resultSetConcurrency, int resultSetHoldability) throws SQLException {
// TODO Auto-generated method stub
throw new SQLException("Method not supported");
}
/*
* (non-Javadoc)
*
* @see java.sql.Connection#prepareStatement(java.lang.String)
*/
@Override
public PreparedStatement prepareStatement(String sql) throws SQLException {
return new HivePreparedStatement(this, client, sessHandle, sql);
}
/*
* (non-Javadoc)
*
* @see java.sql.Connection#prepareStatement(java.lang.String, int)
*/
@Override
public PreparedStatement prepareStatement(String sql, int autoGeneratedKeys)
throws SQLException {
return new HivePreparedStatement(this, client, sessHandle, sql);
}
/*
* (non-Javadoc)
*
* @see java.sql.Connection#prepareStatement(java.lang.String, int[])
*/
@Override
public PreparedStatement prepareStatement(String sql, int[] columnIndexes)
throws SQLException {
// TODO Auto-generated method stub
throw new SQLException("Method not supported");
}
/*
* (non-Javadoc)
*
* @see java.sql.Connection#prepareStatement(java.lang.String,
* java.lang.String[])
*/
@Override
public PreparedStatement prepareStatement(String sql, String[] columnNames)
throws SQLException {
// TODO Auto-generated method stub
throw new SQLException("Method not supported");
}
/*
* (non-Javadoc)
*
* @see java.sql.Connection#prepareStatement(java.lang.String, int, int)
*/
@Override
public PreparedStatement prepareStatement(String sql, int resultSetType,
int resultSetConcurrency) throws SQLException {
return new HivePreparedStatement(this, client, sessHandle, sql);
}
/*
* (non-Javadoc)
*
* @see java.sql.Connection#prepareStatement(java.lang.String, int, int, int)
*/
@Override
public PreparedStatement prepareStatement(String sql, int resultSetType,
int resultSetConcurrency, int resultSetHoldability) throws SQLException {
// TODO Auto-generated method stub
throw new SQLException("Method not supported");
}
/*
* (non-Javadoc)
*
* @see java.sql.Connection#releaseSavepoint(java.sql.Savepoint)
*/
@Override
public void releaseSavepoint(Savepoint savepoint) throws SQLException {
// TODO Auto-generated method stub
throw new SQLException("Method not supported");
}
/*
* (non-Javadoc)
*
* @see java.sql.Connection#rollback()
*/
@Override
public void rollback() throws SQLException {
// TODO Auto-generated method stub
throw new SQLException("Method not supported");
}
/*
* (non-Javadoc)
*
* @see java.sql.Connection#rollback(java.sql.Savepoint)
*/
@Override
public void rollback(Savepoint savepoint) throws SQLException {
// TODO Auto-generated method stub
throw new SQLException("Method not supported");
}
/*
* (non-Javadoc)
*
* @see java.sql.Connection#setAutoCommit(boolean)
*/
@Override
public void setAutoCommit(boolean autoCommit) throws SQLException {
if (autoCommit) {
throw new SQLException("enabling autocommit is not supported");
}
}
/*
* (non-Javadoc)
*
* @see java.sql.Connection#setCatalog(java.lang.String)
*/
@Override
public void setCatalog(String catalog) throws SQLException {
// Per JDBC spec, if the driver does not support catalogs,
// it will silently ignore this request.
if (isClosed) {
throw new SQLException("Connection is closed");
}
return;
}
/*
* (non-Javadoc)
*
* @see java.sql.Connection#setClientInfo(java.util.Properties)
*/
@Override
public void setClientInfo(Properties properties)
throws SQLClientInfoException {
// TODO Auto-generated method stub
throw new SQLClientInfoException("Method not supported", null);
}
/*
* (non-Javadoc)
*
* @see java.sql.Connection#setClientInfo(java.lang.String, java.lang.String)
*/
@Override
public void setClientInfo(String name, String value)
throws SQLClientInfoException {
// TODO Auto-generated method stub
throw new SQLClientInfoException("Method not supported", null);
}
/*
* (non-Javadoc)
*
* @see java.sql.Connection#setHoldability(int)
*/
@Override
public void setHoldability(int holdability) throws SQLException {
// TODO Auto-generated method stub
throw new SQLException("Method not supported");
}
public void setNetworkTimeout(Executor executor, int milliseconds) throws SQLException {
// JDK 1.7
throw new SQLException("Method not supported");
}
/*
* (non-Javadoc)
*
* @see java.sql.Connection#setReadOnly(boolean)
*/
@Override
public void setReadOnly(boolean readOnly) throws SQLException {
// TODO Auto-generated method stub
throw new SQLException("Method not supported");
}
/*
* (non-Javadoc)
*
* @see java.sql.Connection#setSavepoint()
*/
@Override
public Savepoint setSavepoint() throws SQLException {
// TODO Auto-generated method stub
throw new SQLException("Method not supported");
}
/*
* (non-Javadoc)
*
* @see java.sql.Connection#setSavepoint(java.lang.String)
*/
@Override
public Savepoint setSavepoint(String name) throws SQLException {
// TODO Auto-generated method stub
throw new SQLException("Method not supported");
}
public void setSchema(String schema) throws SQLException {
// JDK 1.7
if (isClosed) {
throw new SQLException("Connection is closed");
}
if (schema == null || schema.isEmpty()) {
throw new SQLException("Schema name is null or empty");
}
Statement stmt = createStatement();
stmt.execute("use " + schema);
stmt.close();
}
/*
* (non-Javadoc)
*
* @see java.sql.Connection#setTransactionIsolation(int)
*/
@Override
public void setTransactionIsolation(int level) throws SQLException {
// TODO: throw an exception?
}
/*
* (non-Javadoc)
*
* @see java.sql.Connection#setTypeMap(java.util.Map)
*/
@Override
public void setTypeMap(Map> map) throws SQLException {
// TODO Auto-generated method stub
throw new SQLException("Method not supported");
}
/*
* (non-Javadoc)
*
* @see java.sql.Wrapper#isWrapperFor(java.lang.Class)
*/
@Override
public boolean isWrapperFor(Class iface) throws SQLException {
// TODO Auto-generated method stub
throw new SQLException("Method not supported");
}
/*
* (non-Javadoc)
*
* @see java.sql.Wrapper#unwrap(java.lang.Class)
*/
@Override
public T unwrap(Class iface) throws SQLException {
// TODO Auto-generated method stub
throw new SQLException("Method not supported");
}
public TProtocolVersion getProtocol() {
return protocol;
}
}