org.apache.kyuubi.jdbc.hive.KyuubiBaseResultSet Maven / Gradle / Ivy
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/*
* 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.kyuubi.jdbc.hive;
import java.io.ByteArrayInputStream;
import java.io.InputStream;
import java.math.BigDecimal;
import java.math.MathContext;
import java.nio.charset.StandardCharsets;
import java.sql.*;
import java.util.Calendar;
import java.util.List;
import org.apache.kyuubi.jdbc.hive.adapter.SQLResultSet;
import org.apache.kyuubi.jdbc.hive.common.HiveIntervalDayTime;
import org.apache.kyuubi.jdbc.hive.common.HiveIntervalYearMonth;
import org.apache.kyuubi.jdbc.hive.common.TimestampTZUtil;
import org.apache.kyuubi.shaded.hive.service.rpc.thrift.TTableSchema;
import org.apache.kyuubi.shaded.hive.service.rpc.thrift.TTypeId;
/** Data independent base class which implements the common part of all Kyuubi result sets. */
@SuppressWarnings("deprecation")
public abstract class KyuubiBaseResultSet implements SQLResultSet {
protected Statement statement = null;
protected SQLWarning warningChain = null;
protected boolean wasNull = false;
protected Object[] row;
protected List columnNames;
protected List normalizedColumnNames;
protected List columnTypes;
protected List columnAttributes;
private TTableSchema schema;
@Override
public int findColumn(String columnName) throws SQLException {
int columnIndex = 0;
boolean findColumn = false;
for (String normalizedColumnName : normalizedColumnNames) {
++columnIndex;
String[] names = normalizedColumnName.split("\\.");
String name = names[names.length - 1];
if (name.equalsIgnoreCase(columnName) || normalizedColumnName.equalsIgnoreCase(columnName)) {
findColumn = true;
break;
}
}
if (!findColumn) {
throw new KyuubiSQLException("Could not find " + columnName + " in " + normalizedColumnNames);
} else {
return columnIndex;
}
}
@Override
public BigDecimal getBigDecimal(int columnIndex) throws SQLException {
Object val = getObject(columnIndex);
if (val == null || val instanceof BigDecimal) {
return (BigDecimal) val;
}
throw new KyuubiSQLException("Illegal conversion");
}
@Override
public BigDecimal getBigDecimal(String columnName) throws SQLException {
return getBigDecimal(findColumn(columnName));
}
@Override
public BigDecimal getBigDecimal(int columnIndex, int scale) throws SQLException {
MathContext mc = new MathContext(scale);
return getBigDecimal(columnIndex).round(mc);
}
@Override
public BigDecimal getBigDecimal(String columnName, int scale) throws SQLException {
return getBigDecimal(findColumn(columnName), scale);
}
@Override
public InputStream getBinaryStream(int columnIndex) throws SQLException {
Object obj = getObject(columnIndex);
if (obj == null) {
return null;
} else if (obj instanceof InputStream) {
return (InputStream) obj;
} else if (obj instanceof byte[]) {
byte[] byteArray = (byte[]) obj;
return new ByteArrayInputStream(byteArray);
} else if (obj instanceof String) {
String str = (String) obj;
return new ByteArrayInputStream(str.getBytes(StandardCharsets.UTF_8));
}
throw new KyuubiSQLException("Illegal conversion to binary stream from column " + columnIndex);
}
@Override
public InputStream getBinaryStream(String columnName) throws SQLException {
return getBinaryStream(findColumn(columnName));
}
@Override
public boolean getBoolean(int columnIndex) throws SQLException {
Object obj = getObject(columnIndex);
if (obj instanceof Boolean) {
return (Boolean) obj;
} else if (obj == null) {
return false;
} else if (obj instanceof Number) {
return ((Number) obj).intValue() != 0;
} else if (obj instanceof String) {
return !obj.equals("0");
}
throw new KyuubiSQLException("Cannot convert column " + columnIndex + " to boolean");
}
@Override
public boolean getBoolean(String columnName) throws SQLException {
return getBoolean(findColumn(columnName));
}
@Override
public byte getByte(int columnIndex) throws SQLException {
Object obj = getObject(columnIndex);
if (obj instanceof Number) {
return ((Number) obj).byteValue();
} else if (obj == null) {
return 0;
}
throw new KyuubiSQLException("Cannot convert column " + columnIndex + " to byte");
}
@Override
public byte getByte(String columnName) throws SQLException {
return getByte(findColumn(columnName));
}
@Override
public int getConcurrency() throws SQLException {
return ResultSet.CONCUR_READ_ONLY;
}
@Override
public Date getDate(int columnIndex) throws SQLException {
Object obj = getObject(columnIndex);
if (obj == null) {
return null;
}
if (obj instanceof Date) {
return (Date) obj;
}
try {
if (obj instanceof String) {
return Date.valueOf((String) obj);
}
} catch (Exception e) {
throw new KyuubiSQLException("Cannot convert column " + columnIndex + " to date: " + e, e);
}
// If we fell through to here this is not a valid type conversion
throw new KyuubiSQLException(
"Cannot convert column " + columnIndex + " to date: Illegal conversion");
}
@Override
public Date getDate(String columnName) throws SQLException {
return getDate(findColumn(columnName));
}
@Override
public Date getDate(int columnIndex, Calendar cal) throws SQLException {
Date value = getDate(columnIndex);
if (value == null) {
return null;
}
try {
return parseDate(value, cal);
} catch (IllegalArgumentException e) {
throw new KyuubiSQLException("Cannot convert column " + columnIndex + " to date: " + e, e);
}
}
@Override
public Date getDate(String columnLabel, Calendar cal) throws SQLException {
return this.getDate(findColumn(columnLabel), cal);
}
private Date parseDate(Date value, Calendar cal) {
if (cal == null) {
cal = Calendar.getInstance();
}
cal.setTime(value);
return new Date(cal.getTimeInMillis());
}
@Override
public double getDouble(int columnIndex) throws SQLException {
try {
Object obj = getObject(columnIndex);
if (obj instanceof Number) {
return ((Number) obj).doubleValue();
} else if (obj == null) {
return 0;
} else if (obj instanceof String) {
return Double.parseDouble((String) obj);
}
throw new Exception("Illegal conversion");
} catch (Exception e) {
throw new KyuubiSQLException("Cannot convert column " + columnIndex + " to double: " + e, e);
}
}
@Override
public double getDouble(String columnName) throws SQLException {
return getDouble(findColumn(columnName));
}
@Override
public int getFetchDirection() throws SQLException {
return ResultSet.FETCH_FORWARD;
}
@Override
public float getFloat(int columnIndex) throws SQLException {
try {
Object obj = getObject(columnIndex);
if (obj instanceof Number) {
return ((Number) obj).floatValue();
} else if (obj == null) {
return 0;
} else if (obj instanceof String) {
return Float.parseFloat((String) obj);
}
throw new Exception("Illegal conversion");
} catch (Exception e) {
throw new KyuubiSQLException("Cannot convert column " + columnIndex + " to float: " + e, e);
}
}
@Override
public float getFloat(String columnName) throws SQLException {
return getFloat(findColumn(columnName));
}
@Override
public int getInt(int columnIndex) throws SQLException {
try {
Object obj = getObject(columnIndex);
if (obj instanceof Number) {
return ((Number) obj).intValue();
} else if (obj == null) {
return 0;
} else if (obj instanceof String) {
return Integer.parseInt((String) obj);
}
throw new Exception("Illegal conversion");
} catch (Exception e) {
throw new KyuubiSQLException("Cannot convert column " + columnIndex + " to integer" + e, e);
}
}
@Override
public int getInt(String columnName) throws SQLException {
return getInt(findColumn(columnName));
}
@Override
public long getLong(int columnIndex) throws SQLException {
try {
Object obj = getObject(columnIndex);
if (obj instanceof Number) {
return ((Number) obj).longValue();
} else if (obj == null) {
return 0;
} else if (obj instanceof String) {
return Long.parseLong((String) obj);
}
throw new Exception("Illegal conversion");
} catch (Exception e) {
throw new KyuubiSQLException("Cannot convert column " + columnIndex + " to long: " + e, e);
}
}
@Override
public long getLong(String columnName) throws SQLException {
return getLong(findColumn(columnName));
}
@Override
public ResultSetMetaData getMetaData() throws SQLException {
return new KyuubiResultSetMetaData(columnNames, columnTypes, columnAttributes);
}
private Object getColumnValue(int columnIndex) throws SQLException {
if (row == null) {
throw new KyuubiSQLException("No row found.");
}
if (row.length == 0) {
throw new KyuubiSQLException("RowSet does not contain any columns!");
}
if (columnIndex > row.length) {
throw new KyuubiSQLException("Invalid columnIndex: " + columnIndex);
}
TTypeId columnType = columnTypes.get(columnIndex - 1);
try {
Object evaluated = evaluate(columnType, row[columnIndex - 1]);
wasNull = evaluated == null;
return evaluated;
} catch (Exception e) {
e.printStackTrace();
throw new KyuubiSQLException("Unrecognized column type:" + columnType, e);
}
}
private Object evaluate(TTypeId columnType, Object value) {
if (value == null) {
return null;
}
switch (columnType) {
case BINARY_TYPE:
if (value instanceof String) {
return ((String) value).getBytes();
}
return value;
case TIMESTAMP_TYPE:
return Timestamp.valueOf((String) value);
case TIMESTAMPLOCALTZ_TYPE:
return TimestampTZUtil.parse((String) value);
case DECIMAL_TYPE:
return new BigDecimal((String) value);
case DATE_TYPE:
return Date.valueOf((String) value);
case INTERVAL_YEAR_MONTH_TYPE:
return HiveIntervalYearMonth.valueOf((String) value);
case INTERVAL_DAY_TIME_TYPE:
return HiveIntervalDayTime.valueOf((String) value);
case ARRAY_TYPE:
case MAP_TYPE:
case STRUCT_TYPE:
// todo: returns json string. should recreate object from it?
return value;
default:
return value;
}
}
@Override
public Object getObject(int columnIndex) throws SQLException {
return getColumnValue(columnIndex);
}
@Override
public Object getObject(String columnName) throws SQLException {
return getObject(findColumn(columnName));
}
@Override
public short getShort(int columnIndex) throws SQLException {
try {
Object obj = getObject(columnIndex);
if (obj instanceof Number) {
return ((Number) obj).shortValue();
} else if (obj == null) {
return 0;
} else if (obj instanceof String) {
return Short.parseShort((String) obj);
}
throw new Exception("Illegal conversion");
} catch (Exception e) {
throw new KyuubiSQLException("Cannot convert column " + columnIndex + " to short: " + e, e);
}
}
@Override
public short getShort(String columnName) throws SQLException {
return getShort(findColumn(columnName));
}
@Override
public Statement getStatement() throws SQLException {
return this.statement;
}
/**
* @param columnIndex - the first column is 1, the second is 2, ...
* @see java.sql.ResultSet#getString(int)
*/
@Override
public String getString(int columnIndex) throws SQLException {
Object value = getColumnValue(columnIndex);
if (wasNull) {
return null;
}
if (value instanceof byte[]) {
return new String((byte[]) value);
}
return value.toString();
}
@Override
public String getString(String columnName) throws SQLException {
return getString(findColumn(columnName));
}
@Override
public Timestamp getTimestamp(int columnIndex) throws SQLException {
Object obj = getObject(columnIndex);
if (obj == null) {
return null;
}
if (obj instanceof Timestamp) {
return (Timestamp) obj;
}
if (obj instanceof String) {
return Timestamp.valueOf((String) obj);
}
throw new KyuubiSQLException("Illegal conversion");
}
@Override
public Timestamp getTimestamp(String columnName) throws SQLException {
return getTimestamp(findColumn(columnName));
}
@Override
public Timestamp getTimestamp(int columnIndex, Calendar cal) throws SQLException {
Timestamp value = getTimestamp(columnIndex);
if (value == null) {
return null;
}
try {
return parseTimestamp(value, cal);
} catch (IllegalArgumentException e) {
throw new KyuubiSQLException(
"Cannot convert column " + columnIndex + " to timestamp: " + e, e);
}
}
@Override
public Timestamp getTimestamp(String columnLabel, Calendar cal) throws SQLException {
return this.getTimestamp(findColumn(columnLabel), cal);
}
private Timestamp parseTimestamp(Timestamp timestamp, Calendar cal) {
if (cal == null) {
cal = Calendar.getInstance();
}
long v = timestamp.getTime();
cal.setTimeInMillis(v);
timestamp = new Timestamp(cal.getTime().getTime());
return timestamp;
}
@Override
public Time getTime(int columnIndex) throws SQLException {
Object obj = getObject(columnIndex);
if (obj == null) {
return null;
}
if (obj instanceof Time) {
return (Time) obj;
}
if (obj instanceof String) {
return Time.valueOf((String) obj);
}
throw new KyuubiSQLException("Illegal conversion");
}
@Override
public Time getTime(String columnLabel) throws SQLException {
return getTime(findColumn(columnLabel));
}
@Override
public Time getTime(int columnIndex, Calendar cal) throws SQLException {
Time value = getTime(columnIndex);
if (value == null) {
return null;
}
try {
return parseTime(value, cal);
} catch (IllegalArgumentException e) {
throw new KyuubiSQLException("Cannot convert column " + columnIndex + " to time: " + e, e);
}
}
@Override
public Time getTime(String columnLabel, Calendar cal) throws SQLException {
return this.getTime(findColumn(columnLabel), cal);
}
private Time parseTime(Time date, Calendar cal) {
if (cal == null) {
cal = Calendar.getInstance();
}
long v = date.getTime();
cal.setTimeInMillis(v);
date = new Time(cal.getTime().getTime());
return date;
}
@Override
public int getType() throws SQLException {
return ResultSet.TYPE_FORWARD_ONLY;
}
@Override
public boolean rowDeleted() throws SQLException {
return false;
}
@Override
public boolean rowInserted() throws SQLException {
return false;
}
@Override
public boolean rowUpdated() throws SQLException {
return false;
}
@Override
public SQLWarning getWarnings() throws SQLException {
return warningChain;
}
@Override
public void clearWarnings() throws SQLException {
warningChain = null;
}
@Override
public boolean wasNull() throws SQLException {
return wasNull;
}
protected void setSchema(TTableSchema schema) {
this.schema = schema;
}
protected TTableSchema getSchema() {
return schema;
}
}