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com.impossibl.postgres.jdbc.PGPreparedStatement Maven / Gradle / Ivy
/**
* Copyright (c) 2013, impossibl.com
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of impossibl.com nor the names of its contributors may
* be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
package com.impossibl.postgres.jdbc;
import com.impossibl.postgres.datetime.instants.Instants;
import com.impossibl.postgres.protocol.BindExecCommand;
import com.impossibl.postgres.protocol.PrepareCommand;
import com.impossibl.postgres.protocol.QueryCommand;
import com.impossibl.postgres.protocol.ResultField;
import com.impossibl.postgres.protocol.ServerObjectType;
import com.impossibl.postgres.types.Type;
import com.impossibl.postgres.utils.guava.ByteStreams;
import com.impossibl.postgres.utils.guava.CharStreams;
import static com.impossibl.postgres.jdbc.ErrorUtils.chainWarnings;
import static com.impossibl.postgres.jdbc.Exceptions.NOT_ALLOWED_ON_PREP_STMT;
import static com.impossibl.postgres.jdbc.Exceptions.NOT_IMPLEMENTED;
import static com.impossibl.postgres.jdbc.Exceptions.NOT_SUPPORTED;
import static com.impossibl.postgres.jdbc.Exceptions.PARAMETER_INDEX_OUT_OF_BOUNDS;
import static com.impossibl.postgres.jdbc.SQLTypeMetaData.getSQLType;
import static com.impossibl.postgres.jdbc.SQLTypeUtils.coerce;
import static com.impossibl.postgres.jdbc.SQLTypeUtils.mapSetType;
import static com.impossibl.postgres.jdbc.Unwrapping.unwrapBlob;
import static com.impossibl.postgres.jdbc.Unwrapping.unwrapClob;
import static com.impossibl.postgres.jdbc.Unwrapping.unwrapObject;
import static com.impossibl.postgres.jdbc.Unwrapping.unwrapRowId;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.Reader;
import java.io.StringWriter;
import java.math.BigDecimal;
import java.net.URL;
import java.sql.Array;
import java.sql.BatchUpdateException;
import java.sql.Blob;
import java.sql.Clob;
import java.sql.Date;
import java.sql.NClob;
import java.sql.ParameterMetaData;
import java.sql.PreparedStatement;
import java.sql.Ref;
import java.sql.ResultSet;
import java.sql.ResultSetMetaData;
import java.sql.RowId;
import java.sql.SQLException;
import java.sql.SQLWarning;
import java.sql.SQLXML;
import java.sql.Time;
import java.sql.Timestamp;
import java.sql.Types;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Calendar;
import java.util.Collections;
import java.util.List;
import java.util.TimeZone;
import java.util.concurrent.Callable;
import java.util.concurrent.ExecutionException;
import static java.nio.charset.StandardCharsets.US_ASCII;
import static java.nio.charset.StandardCharsets.UTF_8;
import static java.util.Arrays.asList;
class PGPreparedStatement extends PGStatement implements PreparedStatement {
String sqlText;
List parameterTypes;
List parameterValues;
List> batchParameterTypes;
List> batchParameterValues;
boolean wantsGeneratedKeys;
boolean parsed;
PGPreparedStatement(PGConnectionImpl connection, int type, int concurrency, int holdability, String name, String sqlText, int parameterCount, String cursorName) {
super(connection, type, concurrency, holdability, null, null);
this.sqlText = sqlText;
this.parameterTypes = new ArrayList<>(asList(new Type[parameterCount]));
this.parameterValues = new ArrayList<>(asList(new Object[parameterCount]));
this.cursorName = cursorName;
}
public boolean getWantsGeneratedKeys() {
return wantsGeneratedKeys;
}
public void setWantsGeneratedKeys(boolean wantsGeneratedKeys) {
this.wantsGeneratedKeys = wantsGeneratedKeys;
}
void set(int parameterIdx, Object val, int targetSQLType) throws SQLException {
checkClosed();
if (parameterIdx < 1 || parameterIdx > parameterValues.size()) {
throw PARAMETER_INDEX_OUT_OF_BOUNDS;
}
parameterIdx -= 1;
Type paramType = parameterTypes.get(parameterIdx);
if (targetSQLType == Types.ARRAY || targetSQLType == Types.STRUCT || targetSQLType == Types.OTHER) {
targetSQLType = Types.NULL;
}
if (paramType == null || targetSQLType != getSQLType(paramType)) {
paramType = SQLTypeMetaData.getType(targetSQLType, connection.getRegistry());
parameterTypes.set(parameterIdx, paramType);
parsed = false;
}
parameterValues.set(parameterIdx, val);
}
@Override
void internalClose() throws SQLException {
super.internalClose();
parameterTypes = null;
parameterValues = null;
}
void parseIfNeeded() throws SQLException {
if (cursorName != null && command != null) {
super.executeSimple("CLOSE " + cursorName);
}
if (!parsed) {
if (name != null && !name.startsWith(CACHED_STATEMENT_PREFIX)) {
connection.execute(connection.getProtocol().createClose(ServerObjectType.Statement, name), false);
}
CachedStatement cachedStatement;
try {
final CachedStatementKey key = new CachedStatementKey(sqlText, Collections. emptyList());
cachedStatement = connection.getCachedStatement(key, new Callable() {
@Override
public CachedStatement call() throws Exception {
String name = CACHED_STATEMENT_PREFIX + Integer.toString(key.hashCode());
PrepareCommand prep = connection.getProtocol().createPrepare(name, sqlText, Collections. emptyList());
warningChain = connection.execute(prep, true);
return new CachedStatement(name, prep.getDescribedParameterTypes(), prep.getDescribedResultFields());
}
});
}
catch (ExecutionException e) {
throw (SQLException) e.getCause();
}
catch (Exception e) {
throw (SQLException) e;
}
name = cachedStatement.name;
parameterTypes = copyNonNullTypes(parameterTypes, cachedStatement.parameterTypes);
resultFields = cachedStatement.resultFields;
parsed = true;
}
}
@Override
public boolean execute() throws SQLException {
parseIfNeeded();
closeResultSets();
for (int c = 0, sz = parameterTypes.size(); c < sz; ++c) {
Type parameterType = parameterTypes.get(c);
Object parameterValue = parameterValues.get(c);
if (parameterValue != null) {
Class targetType = mapSetType(parameterType);
try {
parameterValue = coerce(parameterValue, parameterType, targetType, Collections.>emptyMap(), TimeZone.getDefault(), connection);
}
catch (SQLException coercionException) {
throw new SQLException("Error converting parameter " + c, coercionException);
}
}
parameterValues.set(c, parameterValue);
}
boolean res = super.executeStatement(name, parameterTypes, parameterValues);
if (cursorName != null) {
res = super.executeSimple("FETCH ABSOLUTE 0 FROM " + cursorName);
}
if (wantsGeneratedKeys) {
generatedKeysResultSet = getResultSet();
}
return res;
}
@Override
public PGResultSet executeQuery() throws SQLException {
execute();
return getResultSet();
}
@Override
public int executeUpdate() throws SQLException {
execute();
return getUpdateCount();
}
@Override
public void addBatch() throws SQLException {
checkClosed();
if (batchParameterTypes == null) {
batchParameterTypes = new ArrayList<>();
}
if (batchParameterValues == null) {
batchParameterValues = new ArrayList<>();
}
batchParameterTypes.add(new ArrayList<>(parameterTypes));
batchParameterValues.add(new ArrayList<>(parameterValues));
}
@Override
public void clearBatch() throws SQLException {
checkClosed();
batchParameterValues = null;
}
@Override
public int[] executeBatch() throws SQLException {
checkClosed();
closeResultSets();
try {
warningChain = null;
if (batchParameterValues == null || batchParameterValues.isEmpty()) {
return new int[0];
}
int[] counts = new int[batchParameterValues.size()];
Arrays.fill(counts, SUCCESS_NO_INFO);
List generatedKeys = new ArrayList<>();
BindExecCommand command = connection.getProtocol().createBindExec(null, null, parameterTypes, Collections.emptyList(), resultFields, Object[].class);
List lastParameterTypes = null;
List lastResultFields = null;
for (int c = 0, sz = batchParameterValues.size(); c < sz; ++c) {
List parameterTypes = mergeTypes(batchParameterTypes.get(c), lastParameterTypes);
if (lastParameterTypes == null || !lastParameterTypes.equals(parameterTypes)) {
PrepareCommand prep = connection.getProtocol().createPrepare(null, sqlText, parameterTypes);
connection.execute(prep, true);
parameterTypes = prep.getDescribedParameterTypes();
lastParameterTypes = parameterTypes;
lastResultFields = prep.getDescribedResultFields();
}
List parameterValues = batchParameterValues.get(c);
command.setParameterTypes(parameterTypes);
command.setParameterValues(parameterValues);
SQLWarning warnings = connection.execute(command, true);
warningChain = chainWarnings(warningChain, warnings);
List resultBatches = command.getResultBatches();
if (resultBatches.size() != 1) {
throw new BatchUpdateException(counts);
}
QueryCommand.ResultBatch resultBatch = resultBatches.get(0);
if (resultBatch.rowsAffected == null) {
counts[c] = 0;
}
else {
counts[c] = (int) (long) resultBatch.rowsAffected;
}
if (wantsGeneratedKeys) {
generatedKeys.add((Object[]) resultBatch.results.get(0));
}
}
generatedKeysResultSet = createResultSet(lastResultFields, generatedKeys);
return counts;
}
finally {
batchParameterTypes = null;
batchParameterValues = null;
}
}
List mergeTypes(List list, List defaultTypes) {
if (defaultTypes == null)
return list;
for (int c = 0, sz = list.size(); c < sz; ++c) {
Type type = list.get(c);
if (type == null)
type = defaultTypes.get(c);
list.set(c, type);
}
return list;
}
List copyNonNullTypes(List list, List sourceTypes) {
if (sourceTypes == null)
return list;
for (int c = 0, sz = list.size(); c < sz; ++c) {
Type type = sourceTypes.get(c);
if (type != null) {
list.set(c, type);
}
}
return list;
}
@Override
public void clearParameters() throws SQLException {
checkClosed();
for (int c = 0; c < parameterValues.size(); ++c) {
parameterValues.set(c, null);
}
}
@Override
public ParameterMetaData getParameterMetaData() throws SQLException {
checkClosed();
parseIfNeeded();
return new PGParameterMetaData(parameterTypes, connection.getTypeMap());
}
@Override
public ResultSetMetaData getMetaData() throws SQLException {
checkClosed();
parseIfNeeded();
return new PGResultSetMetaData(connection, resultFields, connection.getTypeMap());
}
@Override
public void setNull(int parameterIndex, int sqlType) throws SQLException {
set(parameterIndex, null, Types.NULL);
}
@Override
public void setBoolean(int parameterIndex, boolean x) throws SQLException {
set(parameterIndex, x, Types.BOOLEAN);
}
@Override
public void setByte(int parameterIndex, byte x) throws SQLException {
set(parameterIndex, x, Types.TINYINT);
}
@Override
public void setShort(int parameterIndex, short x) throws SQLException {
set(parameterIndex, x, Types.SMALLINT);
}
@Override
public void setInt(int parameterIndex, int x) throws SQLException {
set(parameterIndex, x, Types.INTEGER);
}
@Override
public void setLong(int parameterIndex, long x) throws SQLException {
set(parameterIndex, x, Types.BIGINT);
}
@Override
public void setFloat(int parameterIndex, float x) throws SQLException {
set(parameterIndex, x, Types.FLOAT);
}
@Override
public void setDouble(int parameterIndex, double x) throws SQLException {
set(parameterIndex, x, Types.DOUBLE);
}
@Override
public void setBigDecimal(int parameterIndex, BigDecimal x) throws SQLException {
set(parameterIndex, x, Types.DECIMAL);
}
@Override
public void setString(int parameterIndex, String x) throws SQLException {
set(parameterIndex, x, Types.VARCHAR);
}
@Override
public void setBytes(int parameterIndex, byte[] x) throws SQLException {
set(parameterIndex, x, Types.BINARY);
}
@Override
public void setDate(int parameterIndex, Date x) throws SQLException {
setDate(parameterIndex, x, Calendar.getInstance());
}
@Override
public void setTime(int parameterIndex, Time x) throws SQLException {
setTime(parameterIndex, x, Calendar.getInstance());
}
@Override
public void setTimestamp(int parameterIndex, Timestamp x) throws SQLException {
setTimestamp(parameterIndex, x, Calendar.getInstance());
}
@Override
public void setDate(int parameterIndex, Date x, Calendar cal) throws SQLException {
TimeZone zone = cal.getTimeZone();
set(parameterIndex, Instants.fromDate(x, zone), Types.DATE);
}
@Override
public void setTime(int parameterIndex, Time x, Calendar cal) throws SQLException {
TimeZone zone = cal.getTimeZone();
set(parameterIndex, Instants.fromTime(x, zone), Types.TIME);
}
@Override
public void setTimestamp(int parameterIndex, Timestamp x, Calendar cal) throws SQLException {
checkClosed();
TimeZone zone = cal.getTimeZone();
set(parameterIndex, Instants.fromTimestamp(x, zone), Types.TIMESTAMP);
}
@Override
public void setBinaryStream(int parameterIndex, InputStream x) throws SQLException {
set(parameterIndex, x, Types.BINARY);
}
@Override
public void setBinaryStream(int parameterIndex, InputStream x, int length) throws SQLException {
if (length < 0) {
throw new SQLException("Invalid length");
}
if (x != null) {
x = ByteStreams.limit(x, length);
}
else if (length != 0) {
throw new SQLException("Invalid length");
}
set(parameterIndex, x, Types.BINARY);
}
@Override
public void setBinaryStream(int parameterIndex, InputStream x, long length) throws SQLException {
if (length < 0) {
throw new SQLException("Invalid length");
}
if (x != null) {
x = ByteStreams.limit(x, length);
}
else if (length != 0) {
throw new SQLException("Invalid length");
}
set(parameterIndex, x, Types.BINARY);
}
@Override
@Deprecated
public void setUnicodeStream(int parameterIndex, InputStream x, int length) throws SQLException {
InputStreamReader reader = new InputStreamReader(x, UTF_8);
setCharacterStream(parameterIndex, reader, length);
}
@Override
public void setAsciiStream(int parameterIndex, InputStream x) throws SQLException {
setAsciiStream(parameterIndex, x, (long) -1);
}
@Override
public void setAsciiStream(int parameterIndex, InputStream x, int length) throws SQLException {
setAsciiStream(parameterIndex, x, (long) length);
}
@Override
public void setAsciiStream(int parameterIndex, InputStream x, long length) throws SQLException {
InputStreamReader reader = new InputStreamReader(x, US_ASCII);
setCharacterStream(parameterIndex, reader, length);
}
@Override
public void setCharacterStream(int parameterIndex, Reader reader) throws SQLException {
setCharacterStream(parameterIndex, reader, (long) -1);
}
@Override
public void setCharacterStream(int parameterIndex, Reader reader, int length) throws SQLException {
setCharacterStream(parameterIndex, reader, (long) length);
}
@Override
public void setCharacterStream(int parameterIndex, Reader reader, long length) throws SQLException {
StringWriter writer = new StringWriter();
try {
CharStreams.copy(reader, writer);
}
catch (IOException e) {
throw new SQLException(e);
}
set(parameterIndex, writer.toString(), Types.VARCHAR);
}
@Override
public void setObject(int parameterIndex, Object x) throws SQLException {
set(parameterIndex, x, Types.OTHER);
}
@Override
public void setObject(int parameterIndex, Object x, int targetSqlType) throws SQLException {
checkClosed();
setObject(parameterIndex, x, targetSqlType, 0);
}
@Override
public void setObject(int parameterIndex, Object x, int targetSqlType, int scaleOrLength) throws SQLException {
checkClosed();
set(parameterIndex, unwrapObject(connection, x), targetSqlType);
}
@Override
public void setBlob(int parameterIndex, Blob x) throws SQLException {
checkClosed();
set(parameterIndex, unwrapBlob(connection, x), Types.BLOB);
}
@Override
public void setBlob(int parameterIndex, InputStream inputStream, long length) throws SQLException {
setBlob(parameterIndex, ByteStreams.limit(inputStream, length));
}
@Override
public void setBlob(int parameterIndex, InputStream inputStream) throws SQLException {
checkClosed();
Blob blob = connection.createBlob();
try {
ByteStreams.copy(inputStream, blob.setBinaryStream(1));
}
catch (IOException e) {
throw new SQLException(e);
}
set(parameterIndex, blob, Types.BLOB);
}
@Override
public void setClob(int parameterIndex, Clob x) throws SQLException {
checkClosed();
set(parameterIndex, unwrapClob(connection, x), Types.CLOB);
}
@Override
public void setClob(int parameterIndex, Reader reader, long length) throws SQLException {
setClob(parameterIndex, CharStreams.limit(reader, length));
}
@Override
public void setClob(int parameterIndex, Reader reader) throws SQLException {
checkClosed();
Clob clob = connection.createClob();
try {
CharStreams.copy(reader, clob.setCharacterStream(1));
}
catch (IOException e) {
throw new SQLException(e);
}
set(parameterIndex, clob, Types.CLOB);
}
@Override
public void setArray(int parameterIndex, Array x) throws SQLException {
set(parameterIndex, x, Types.ARRAY);
}
@Override
public void setNull(int parameterIndex, int sqlType, String typeName) throws SQLException {
set(parameterIndex, null, Types.NULL);
}
@Override
public void setURL(int parameterIndex, URL x) throws SQLException {
set(parameterIndex, x, Types.VARCHAR);
}
@Override
public void setSQLXML(int parameterIndex, SQLXML xmlObject) throws SQLException {
checkClosed();
if (!(xmlObject instanceof PGSQLXML)) {
throw new SQLException("SQLXML object not created by driver");
}
PGSQLXML sqlXml = (PGSQLXML) xmlObject;
set(parameterIndex, sqlXml.getData(), Types.SQLXML);
}
@Override
public void setRowId(int parameterIndex, RowId x) throws SQLException {
checkClosed();
set(parameterIndex, unwrapRowId(connection, x), Types.ROWID);
}
@Override
public void setRef(int parameterIndex, Ref x) throws SQLException {
checkClosed();
throw NOT_IMPLEMENTED;
}
@Override
public void setNString(int parameterIndex, String value) throws SQLException {
checkClosed();
throw NOT_SUPPORTED;
}
@Override
public void setNClob(int parameterIndex, NClob value) throws SQLException {
checkClosed();
throw NOT_SUPPORTED;
}
@Override
public void setNClob(int parameterIndex, Reader reader, long length) throws SQLException {
checkClosed();
throw NOT_SUPPORTED;
}
@Override
public void setNClob(int parameterIndex, Reader reader) throws SQLException {
checkClosed();
throw NOT_SUPPORTED;
}
@Override
public void setNCharacterStream(int parameterIndex, Reader value) throws SQLException {
checkClosed();
throw NOT_SUPPORTED;
}
@Override
public void setNCharacterStream(int parameterIndex, Reader value, long length) throws SQLException {
checkClosed();
throw NOT_SUPPORTED;
}
@Override
public int executeUpdate(String sql, int autoGeneratedKeys) throws SQLException {
throw NOT_ALLOWED_ON_PREP_STMT;
}
@Override
public int executeUpdate(String sql, int[] columnIndexes) throws SQLException {
throw NOT_ALLOWED_ON_PREP_STMT;
}
@Override
public int executeUpdate(String sql, String[] columnNames) throws SQLException {
throw NOT_ALLOWED_ON_PREP_STMT;
}
@Override
public boolean execute(String sql, int autoGeneratedKeys) throws SQLException {
throw NOT_ALLOWED_ON_PREP_STMT;
}
@Override
public boolean execute(String sql, int[] columnIndexes) throws SQLException {
throw NOT_ALLOWED_ON_PREP_STMT;
}
@Override
public boolean execute(String sql, String[] columnNames) throws SQLException {
throw NOT_ALLOWED_ON_PREP_STMT;
}
@Override
public boolean execute(String sql) throws SQLException {
throw NOT_ALLOWED_ON_PREP_STMT;
}
@Override
public ResultSet executeQuery(String sql) throws SQLException {
throw NOT_ALLOWED_ON_PREP_STMT;
}
@Override
public int executeUpdate(String sql) throws SQLException {
throw NOT_ALLOWED_ON_PREP_STMT;
}
@Override
public void addBatch(String sql) throws SQLException {
throw NOT_ALLOWED_ON_PREP_STMT;
}
}
