net.snowflake.client.jdbc.SnowflakeStatementV1 Maven / Gradle / Ivy
/*
* Copyright (c) 2012-2019 Snowflake Computing Inc. All rights reserved.
*/
package net.snowflake.client.jdbc;
import static net.snowflake.client.jdbc.ErrorCode.FEATURE_UNSUPPORTED;
import java.sql.*;
import java.util.*;
import java.util.concurrent.ConcurrentHashMap;
import net.snowflake.client.core.*;
import net.snowflake.client.log.SFLogger;
import net.snowflake.client.log.SFLoggerFactory;
import net.snowflake.client.util.VariableTypeArray;
import net.snowflake.common.core.SqlState;
/** Snowflake statement */
class SnowflakeStatementV1 implements Statement, SnowflakeStatement {
static final SFLogger logger = SFLoggerFactory.getLogger(SnowflakeStatementV1.class);
private static final long NO_UPDATES = -1;
protected final SnowflakeConnectionV1 connection;
protected final int resultSetType;
protected final int resultSetConcurrency;
protected final int resultSetHoldability;
/*
* The maximum number of rows this statement ( should return (0 => all rows).
*/
private int maxRows = 0;
// Refer to all open resultSets from this statement
private final Set openResultSets = ConcurrentHashMap.newKeySet();
// result set currently in use
private ResultSet resultSet = null;
private int fetchSize = 50;
private Boolean isClosed = false;
private long updateCount = NO_UPDATES;
// timeout in seconds
private int queryTimeout = 0;
// max field size limited to 16MB
private final int maxFieldSize = 16777216;
SFBaseStatement sfBaseStatement;
private boolean poolable;
/** Snowflake query ID from the latest executed query */
private String queryID;
/** Snowflake query IDs from the latest executed batch */
private List batchQueryIDs = new LinkedList<>();
/** batch of sql strings added by addBatch */
protected final List batch = new ArrayList<>();
private SQLWarning sqlWarnings;
/**
* Construct SnowflakeStatementV1
*
* @param connection connection object
* @param resultSetType result set type: ResultSet.TYPE_FORWARD_ONLY.
* @param resultSetConcurrency result set concurrency: ResultSet.CONCUR_READ_ONLY.
* @param resultSetHoldability result set holdability: ResultSet.CLOSE_CURSORS_AT_COMMIT
* @throws SQLException if any SQL error occurs.
*/
SnowflakeStatementV1(
SnowflakeConnectionV1 connection,
int resultSetType,
int resultSetConcurrency,
int resultSetHoldability)
throws SQLException {
logger.debug(" public SnowflakeStatement(SnowflakeConnectionV1 conn)", false);
this.connection = connection;
if (resultSetType != ResultSet.TYPE_FORWARD_ONLY) {
throw new SQLFeatureNotSupportedException(
String.format("ResultSet type %d is not supported.", resultSetType),
FEATURE_UNSUPPORTED.getSqlState(),
FEATURE_UNSUPPORTED.getMessageCode());
}
if (resultSetConcurrency != ResultSet.CONCUR_READ_ONLY) {
throw new SQLFeatureNotSupportedException(
String.format("ResultSet concurrency %d is not supported.", resultSetConcurrency),
FEATURE_UNSUPPORTED.getSqlState(),
FEATURE_UNSUPPORTED.getMessageCode());
}
if (resultSetHoldability != ResultSet.CLOSE_CURSORS_AT_COMMIT) {
throw new SQLFeatureNotSupportedException(
String.format("ResultSet holdability %d is not supported.", resultSetHoldability),
FEATURE_UNSUPPORTED.getSqlState(),
FEATURE_UNSUPPORTED.getMessageCode());
}
this.resultSetType = resultSetType;
this.resultSetConcurrency = resultSetConcurrency;
this.resultSetHoldability = resultSetHoldability;
sfBaseStatement = (connection != null) ? connection.getHandler().getSFStatement() : null;
}
protected void raiseSQLExceptionIfStatementIsClosed() throws SQLException {
if (isClosed) {
throw new SnowflakeSQLException(ErrorCode.STATEMENT_CLOSED);
}
}
/**
* Execute SQL query
*
* @param sql sql statement
* @return ResultSet
* @throws SQLException if @link{#executeQueryInternal(String, Map)} throws an exception
*/
@Override
public ResultSet executeQuery(String sql) throws SQLException {
raiseSQLExceptionIfStatementIsClosed();
return executeQueryInternal(sql, false, null);
}
/**
* Execute SQL query asynchronously
*
* @param sql sql statement
* @return ResultSet
* @throws SQLException if @link{#executeQueryInternal(String, Map)} throws an exception
*/
public ResultSet executeAsyncQuery(String sql) throws SQLException {
raiseSQLExceptionIfStatementIsClosed();
return executeQueryInternal(sql, true, null);
}
/**
* Execute an update statement
*
* @param sql sql statement
* @return number of rows updated
* @throws SQLException if @link{#executeUpdateInternal(String, Map)} throws exception
*/
@Override
public int executeUpdate(String sql) throws SQLException {
return (int) this.executeLargeUpdate(sql);
}
/**
* Execute an update statement returning the number of affected rows in long
*
* @param sql sql statement
* @return number of rows updated in long
* @throws SQLException if @link{#executeUpdateInternal(String, Map)} throws exception
*/
@Override
public long executeLargeUpdate(String sql) throws SQLException {
return executeUpdateInternal(sql, null, true);
}
long executeUpdateInternal(
String sql, Map parameterBindings, boolean updateQueryRequired)
throws SQLException {
raiseSQLExceptionIfStatementIsClosed();
/* If sql command is a staging command that has parameter binding, throw an exception because parameter binding
is not supported for staging commands. */
if (StmtUtil.checkStageManageCommand(sql) != null && parameterBindings != null) {
throw new SnowflakeSQLLoggedException(
connection.getSFBaseSession(),
ErrorCode.UNSUPPORTED_STATEMENT_TYPE_IN_EXECUTION_API,
StmtUtil.truncateSQL(sql));
}
SFBaseResultSet sfResultSet;
try {
sfResultSet =
sfBaseStatement.execute(
sql, parameterBindings, SFBaseStatement.CallingMethod.EXECUTE_UPDATE);
sfResultSet.setSession(this.connection.getSFBaseSession());
updateCount = ResultUtil.calculateUpdateCount(sfResultSet);
queryID = sfResultSet.getQueryId();
} catch (SFException ex) {
throw new SnowflakeSQLException(
ex.getCause(), ex.getSqlState(), ex.getVendorCode(), ex.getParams());
} finally {
if (resultSet != null) {
openResultSets.add(resultSet);
}
resultSet = null;
}
if (updateCount == NO_UPDATES && updateQueryRequired) {
throw new SnowflakeSQLLoggedException(
connection.getSFBaseSession(),
ErrorCode.UNSUPPORTED_STATEMENT_TYPE_IN_EXECUTION_API,
StmtUtil.truncateSQL(sql));
}
return updateCount;
}
/**
* Internal method for executing a query with bindings accepted.
*
* @param sql sql statement
* @param asyncExec execute query asynchronously
* @param parameterBindings parameters bindings
* @return query result set
* @throws SQLException if @link{SFStatement.execute(String)} throws exception
*/
ResultSet executeQueryInternal(
String sql, boolean asyncExec, Map parameterBindings)
throws SQLException {
SFBaseResultSet sfResultSet;
try {
if (asyncExec) {
if (!connection.getHandler().supportsAsyncQuery()) {
throw new SQLFeatureNotSupportedException(
"Async execution not supported in current context.");
}
sfResultSet =
sfBaseStatement.asyncExecute(
sql, parameterBindings, SFBaseStatement.CallingMethod.EXECUTE_QUERY);
} else {
sfResultSet =
sfBaseStatement.execute(
sql, parameterBindings, SFBaseStatement.CallingMethod.EXECUTE_QUERY);
}
sfResultSet.setSession(this.connection.getSFBaseSession());
} catch (SFException ex) {
throw new SnowflakeSQLException(
ex.getCause(), ex.getSqlState(), ex.getVendorCode(), ex.getParams());
}
if (resultSet != null) {
openResultSets.add(resultSet);
}
if (asyncExec) {
resultSet = connection.getHandler().createAsyncResultSet(sfResultSet, this);
} else {
resultSet = connection.getHandler().createResultSet(sfResultSet, this);
}
return getResultSet();
}
/**
* Execute sql
*
* @param sql sql statement
* @param parameterBindings a map of binds to use for this query
* @return whether there is result set or not
* @throws SQLException if @link{#executeQuery(String)} throws exception
*/
boolean executeInternal(String sql, Map parameterBindings)
throws SQLException {
raiseSQLExceptionIfStatementIsClosed();
connection.injectedDelay();
logger.debug("execute: {}", sql);
String trimmedSql = sql.trim();
if (trimmedSql.length() >= 20 && trimmedSql.toLowerCase().startsWith("set-sf-property")) {
// deprecated: sfsql
executeSetProperty(sql);
return false;
}
SFBaseResultSet sfResultSet;
try {
sfResultSet =
sfBaseStatement.execute(sql, parameterBindings, SFBaseStatement.CallingMethod.EXECUTE);
sfResultSet.setSession(this.connection.getSFBaseSession());
if (resultSet != null) {
openResultSets.add(resultSet);
}
resultSet = connection.getHandler().createResultSet(sfResultSet, this);
queryID = sfResultSet.getQueryId();
// Legacy behavior treats update counts as result sets for single-
// statement execute, so we only treat update counts as update counts
// if CLIENT_SFSQL is not set, or if a statement
// is multi-statement
if (!sfResultSet.getStatementType().isGenerateResultSet()
&& (!connection.getSFBaseSession().isSfSQLMode() || sfBaseStatement.hasChildren())) {
updateCount = ResultUtil.calculateUpdateCount(sfResultSet);
if (resultSet != null) {
openResultSets.add(resultSet);
}
resultSet = null;
return false;
}
updateCount = NO_UPDATES;
return true;
} catch (SFException ex) {
throw new SnowflakeSQLException(
ex.getCause(), ex.getSqlState(), ex.getVendorCode(), ex.getParams());
}
}
/** @return the query ID of the latest executed query */
public String getQueryID() {
// return the queryID for the query executed last time
return queryID;
}
/** @return the query IDs of the latest executed batch queries */
public List getBatchQueryIDs() {
return Collections.unmodifiableList(batchQueryIDs);
}
/** @return the child query IDs for the multiple statements query. */
public String[] getChildQueryIds(String queryID) throws SQLException {
return sfBaseStatement.getChildQueryIds(queryID);
}
/**
* Execute sql
*
* @param sql sql statement
* @return whether there is result set or not
* @throws SQLException if @link{#executeQuery(String)} throws exception
*/
@Override
public boolean execute(String sql) throws SQLException {
return executeInternal(sql, null);
}
@Override
public boolean execute(String sql, int autoGeneratedKeys) throws SQLException {
logger.debug("execute(String sql, int autoGeneratedKeys)", false);
if (autoGeneratedKeys == Statement.NO_GENERATED_KEYS) {
return execute(sql);
} else {
throw new SnowflakeLoggedFeatureNotSupportedException(connection.getSFBaseSession());
}
}
@Override
public boolean execute(String sql, int[] columnIndexes) throws SQLException {
logger.debug("execute(String sql, int[] columnIndexes)", false);
throw new SnowflakeLoggedFeatureNotSupportedException(connection.getSFBaseSession());
}
@Override
public boolean execute(String sql, String[] columnNames) throws SQLException {
logger.debug("execute(String sql, String[] columnNames)", false);
throw new SnowflakeLoggedFeatureNotSupportedException(connection.getSFBaseSession());
}
/**
* Batch Execute. If one of the commands in the batch failed, JDBC will continuing processing and
* throw BatchUpdateException after all commands are processed.
*
* @return an array of update counts
* @throws SQLException if any error occurs.
*/
@Override
public int[] executeBatch() throws SQLException {
logger.debug("int[] executeBatch()", false);
return executeBatchInternal(false).intArr;
}
/**
* Batch Execute. If one of the commands in the batch failed, JDBC will continuing processing and
* throw BatchUpdateException after all commands are processed.
*
* @return an array of update counts
* @throws SQLException if any error occurs.
*/
@Override
public long[] executeLargeBatch() throws SQLException {
logger.debug("executeBatch()", false);
return executeBatchInternal(true).longArr;
}
/**
* This method will iterate through batch and provide sql and bindings to underlying SFStatement
* to get result set.
*
* Note, array binds use a different code path since only one network roundtrip in the array
* bind execution case.
*
* @return the number of updated rows
* @throws SQLException raises if statement is closed or any db error occurs
*/
VariableTypeArray executeBatchInternal(boolean isLong) throws SQLException {
raiseSQLExceptionIfStatementIsClosed();
SQLException exceptionReturned = null;
VariableTypeArray updateCounts;
if (isLong) {
long[] arr = new long[batch.size()];
updateCounts = new VariableTypeArray(null, arr);
} else {
int size = batch.size();
int[] arr = new int[size];
updateCounts = new VariableTypeArray(arr, null);
}
batchQueryIDs.clear();
for (int i = 0; i < batch.size(); i++) {
BatchEntry b = batch.get(i);
try {
long cnt = this.executeUpdateInternal(b.getSql(), b.getParameterBindings(), false);
if (cnt == NO_UPDATES) {
// in executeBatch we set updateCount to SUCCESS_NO_INFO
// for successful query with no updates
cnt = SUCCESS_NO_INFO;
}
if (isLong) {
updateCounts.longArr[i] = cnt;
} else if (cnt <= Integer.MAX_VALUE) {
updateCounts.intArr[i] = (int) cnt;
} else {
throw new SnowflakeSQLLoggedException(
connection.getSFBaseSession(),
ErrorCode.EXECUTE_BATCH_INTEGER_OVERFLOW.getMessageCode(),
SqlState.NUMERIC_VALUE_OUT_OF_RANGE,
i);
}
batchQueryIDs.add(queryID);
} catch (SQLException e) {
exceptionReturned = exceptionReturned == null ? e : exceptionReturned;
if (isLong) {
updateCounts.longArr[i] = (long) EXECUTE_FAILED;
} else {
updateCounts.intArr[i] = EXECUTE_FAILED;
}
}
}
if (exceptionReturned != null && isLong) {
throw new BatchUpdateException(
exceptionReturned.getLocalizedMessage(),
exceptionReturned.getSQLState(),
exceptionReturned.getErrorCode(),
updateCounts.longArr,
exceptionReturned);
} else if (exceptionReturned != null) {
throw new BatchUpdateException(
exceptionReturned.getLocalizedMessage(),
exceptionReturned.getSQLState(),
exceptionReturned.getErrorCode(),
updateCounts.intArr,
exceptionReturned);
}
return updateCounts;
}
@Override
public int executeUpdate(String sql, int autoGeneratedKeys) throws SQLException {
logger.debug("executeUpdate(String sql, int autoGeneratedKeys)", false);
return (int) this.executeLargeUpdate(sql, autoGeneratedKeys);
}
@Override
public long executeLargeUpdate(String sql, int autoGeneratedKeys) throws SQLException {
logger.debug("executeUpdate(String sql, int autoGeneratedKeys)", false);
if (autoGeneratedKeys == Statement.NO_GENERATED_KEYS) {
return executeLargeUpdate(sql);
} else {
throw new SnowflakeLoggedFeatureNotSupportedException(connection.getSFBaseSession());
}
}
@Override
public int executeUpdate(String sql, int[] columnIndexes) throws SQLException {
logger.debug("executeUpdate(String sql, int[] columnIndexes)", false);
throw new SnowflakeLoggedFeatureNotSupportedException(connection.getSFBaseSession());
}
@Override
public long executeLargeUpdate(String sql, int[] columnIndexes) throws SQLException {
logger.debug("executeLargeUpdate(String sql, int[] columnIndexes)", false);
throw new SnowflakeLoggedFeatureNotSupportedException(connection.getSFBaseSession());
}
@Override
public int executeUpdate(String sql, String[] columnNames) throws SQLException {
logger.debug("executeUpdate(String sql, String[] columnNames)", false);
throw new SnowflakeLoggedFeatureNotSupportedException(connection.getSFBaseSession());
}
@Override
public long executeLargeUpdate(String sql, String[] columnNames) throws SQLException {
logger.debug("executeUpdate(String sql, String[] columnNames)", false);
throw new SnowflakeLoggedFeatureNotSupportedException(connection.getSFBaseSession());
}
@Override
public Connection getConnection() throws SQLException {
logger.debug("getConnection()", false);
raiseSQLExceptionIfStatementIsClosed();
return connection;
}
@Override
public int getFetchDirection() throws SQLException {
logger.debug("getFetchDirection()", false);
raiseSQLExceptionIfStatementIsClosed();
return ResultSet.FETCH_FORWARD;
}
@Override
public int getFetchSize() throws SQLException {
logger.debug("getFetchSize()", false);
raiseSQLExceptionIfStatementIsClosed();
return fetchSize;
}
@Override
public ResultSet getGeneratedKeys() throws SQLException {
logger.debug("getGeneratedKeys()", false);
raiseSQLExceptionIfStatementIsClosed();
return new SnowflakeResultSetV1.EmptyResultSet();
}
@Override
public int getMaxFieldSize() throws SQLException {
logger.debug("getMaxFieldSize()", false);
raiseSQLExceptionIfStatementIsClosed();
return maxFieldSize;
}
@Override
public int getMaxRows() throws SQLException {
logger.debug("getMaxRows()", false);
raiseSQLExceptionIfStatementIsClosed();
return maxRows;
}
@Override
public boolean getMoreResults() throws SQLException {
logger.debug("getMoreResults()", false);
return getMoreResults(Statement.CLOSE_CURRENT_RESULT);
}
@Override
public boolean getMoreResults(int current) throws SQLException {
logger.debug("getMoreResults(int current)", false);
raiseSQLExceptionIfStatementIsClosed();
// clean up the current result set, if it exists
if (resultSet != null
&& (current == Statement.CLOSE_CURRENT_RESULT || current == Statement.CLOSE_ALL_RESULTS)) {
resultSet.close();
}
boolean hasResultSet = sfBaseStatement.getMoreResults(current);
SFBaseResultSet sfResultSet = sfBaseStatement.getResultSet();
if (hasResultSet) // result set returned
{
sfResultSet.setSession(this.connection.getSFBaseSession());
if (resultSet != null) {
openResultSets.add(resultSet);
}
resultSet = connection.getHandler().createResultSet(sfResultSet, this);
updateCount = NO_UPDATES;
return true;
} else if (sfResultSet != null) // update count returned
{
if (resultSet != null) {
openResultSets.add(resultSet);
}
resultSet = null;
try {
updateCount = ResultUtil.calculateUpdateCount(sfResultSet);
} catch (SFException ex) {
throw new SnowflakeSQLLoggedException(connection.getSFBaseSession(), ex);
}
return false;
} else // no more results
{
updateCount = NO_UPDATES;
return false;
}
}
@Override
public int getQueryTimeout() throws SQLException {
logger.debug("getQueryTimeout()", false);
raiseSQLExceptionIfStatementIsClosed();
return this.queryTimeout;
}
@Override
public ResultSet getResultSet() throws SQLException {
logger.debug("getResultSet()", false);
raiseSQLExceptionIfStatementIsClosed();
return resultSet;
}
@Override
public int getResultSetConcurrency() throws SQLException {
logger.debug("getResultSetConcurrency()", false);
raiseSQLExceptionIfStatementIsClosed();
return resultSetConcurrency;
}
@Override
public int getResultSetHoldability() throws SQLException {
logger.debug("getResultSetHoldability()", false);
raiseSQLExceptionIfStatementIsClosed();
return resultSetHoldability;
}
@Override
public int getResultSetType() throws SQLException {
logger.debug("getResultSetType()", false);
raiseSQLExceptionIfStatementIsClosed();
return this.resultSetType;
}
@Override
public int getUpdateCount() throws SQLException {
logger.debug("getUpdateCount()", false);
return (int) getUpdateCountIfDML();
}
@Override
public long getLargeUpdateCount() throws SQLException {
logger.debug("getLargeUpdateCount()", false);
return getUpdateCountIfDML();
}
private long getUpdateCountIfDML() throws SQLException {
raiseSQLExceptionIfStatementIsClosed();
if (updateCount != -1 && sfBaseStatement.getResultSet().getStatementType().isDML()) {
return updateCount;
}
return -1;
}
@Override
public SQLWarning getWarnings() throws SQLException {
logger.debug("getWarnings()", false);
raiseSQLExceptionIfStatementIsClosed();
return sqlWarnings;
}
@Override
public boolean isClosed() throws SQLException {
logger.debug("isClosed()", false);
return isClosed; // no exception
}
@Override
public boolean isPoolable() throws SQLException {
logger.debug("isPoolable()", false);
raiseSQLExceptionIfStatementIsClosed();
return poolable;
}
@Override
public void setCursorName(String name) throws SQLException {
logger.debug("setCursorName(String name)", false);
throw new SnowflakeLoggedFeatureNotSupportedException(connection.getSFBaseSession());
}
@Override
public void setEscapeProcessing(boolean enable) throws SQLException {
logger.debug("setEscapeProcessing(boolean enable)", false);
// NOTE: We could raise an exception here, because not implemented
// but it may break the existing applications. For now returning nothnig.
// we should revisit.
raiseSQLExceptionIfStatementIsClosed();
}
@Override
public void setFetchDirection(int direction) throws SQLException {
logger.debug("setFetchDirection(int direction)", false);
raiseSQLExceptionIfStatementIsClosed();
if (direction != ResultSet.FETCH_FORWARD) {
throw new SnowflakeLoggedFeatureNotSupportedException(connection.getSFBaseSession());
}
}
@Override
public void setFetchSize(int rows) throws SQLException {
logger.debug("setFetchSize(int rows), rows={}", rows);
raiseSQLExceptionIfStatementIsClosed();
fetchSize = rows;
}
@Override
public void setMaxFieldSize(int max) throws SQLException {
logger.debug("setMaxFieldSize(int max)", false);
throw new SnowflakeLoggedFeatureNotSupportedException(connection.getSFBaseSession());
}
@Override
public void setMaxRows(int max) throws SQLException {
logger.debug("setMaxRows(int max)", false);
raiseSQLExceptionIfStatementIsClosed();
this.maxRows = max;
try {
if (this.sfBaseStatement != null) {
this.sfBaseStatement.addProperty("rows_per_resultset", max);
}
} catch (SFException ex) {
throw new SnowflakeSQLException(
ex.getCause(), ex.getSqlState(), ex.getVendorCode(), ex.getParams());
}
}
@Override
public void setPoolable(boolean poolable) throws SQLException {
logger.debug("setPoolable(boolean poolable)", false);
raiseSQLExceptionIfStatementIsClosed();
if (poolable) {
throw new SnowflakeLoggedFeatureNotSupportedException(connection.getSFBaseSession());
}
this.poolable = poolable;
}
/**
* Sets a parameter at the statement level.
*
* @param name parameter name.
* @param value parameter value.
* @throws SQLException if any SQL error occurs.
*/
public void setParameter(String name, Object value) throws SQLException {
logger.debug("setParameter", false);
try {
if (this.sfBaseStatement != null) {
this.sfBaseStatement.addProperty(name, value);
}
} catch (SFException ex) {
throw new SnowflakeSQLException(ex);
}
}
@Override
public void setQueryTimeout(int seconds) throws SQLException {
logger.debug("setQueryTimeout(int seconds)", false);
raiseSQLExceptionIfStatementIsClosed();
this.queryTimeout = seconds;
try {
if (this.sfBaseStatement != null) {
this.sfBaseStatement.addProperty("query_timeout", seconds);
}
} catch (SFException ex) {
throw new SnowflakeSQLException(
ex.getCause(), ex.getSqlState(), ex.getVendorCode(), ex.getParams());
}
}
@Override
public boolean isWrapperFor(Class iface) throws SQLException {
logger.debug("isWrapperFor(Class iface)", false);
return iface.isInstance(this);
}
@SuppressWarnings("unchecked")
@Override
public T unwrap(Class iface) throws SQLException {
logger.debug("unwrap(Class iface)", false);
if (!iface.isInstance(this)) {
throw new SQLException(
this.getClass().getName() + " not unwrappable from " + iface.getName());
}
return (T) this;
}
@Override
public void closeOnCompletion() throws SQLException {
logger.debug("closeOnCompletion()", false);
throw new SnowflakeLoggedFeatureNotSupportedException(connection.getSFBaseSession());
}
@Override
public boolean isCloseOnCompletion() throws SQLException {
logger.debug("isCloseOnCompletion()", false);
throw new SnowflakeLoggedFeatureNotSupportedException(connection.getSFBaseSession());
}
@Override
public void close() throws SQLException {
close(true);
}
public void close(boolean removeClosedStatementFromConnection) throws SQLException {
logger.debug("close()", false);
// No exception is raised even if the statement is closed.
if (resultSet != null) {
resultSet.close();
resultSet = null;
}
isClosed = true;
batch.clear();
// also make sure to close all created resultSets from this statement
for (ResultSet rs : openResultSets) {
if (rs != null && !rs.isClosed()) {
if (rs.isWrapperFor(SnowflakeResultSetV1.class)) {
rs.unwrap(SnowflakeResultSetV1.class).close(false);
} else {
rs.close();
}
}
}
openResultSets.clear();
sfBaseStatement.close();
if (removeClosedStatementFromConnection) {
connection.removeClosedStatement(this);
}
}
@Override
public void cancel() throws SQLException {
logger.debug("cancel()", false);
raiseSQLExceptionIfStatementIsClosed();
try {
sfBaseStatement.cancel();
} catch (SFException ex) {
throw new SnowflakeSQLException(ex, ex.getSqlState(), ex.getVendorCode(), ex.getParams());
}
}
@Override
public void clearWarnings() throws SQLException {
logger.debug("clearWarnings()", false);
raiseSQLExceptionIfStatementIsClosed();
sqlWarnings = null;
}
@Override
public void addBatch(String sql) throws SQLException {
logger.debug("addBatch(String sql)", false);
raiseSQLExceptionIfStatementIsClosed();
batch.add(new BatchEntry(sql, null));
}
@Override
public void clearBatch() throws SQLException {
logger.debug("clearBatch()", false);
raiseSQLExceptionIfStatementIsClosed();
batch.clear();
}
private void executeSetProperty(final String sql) {
logger.debug("setting property", false);
// tokenize the sql
String[] tokens = sql.split("\\s+");
if (tokens.length < 2) {
return;
}
if ("tracing".equalsIgnoreCase(tokens[1])) {
if (tokens.length >= 3) {
/*connection.tracingLevel = Level.parse(tokens[2].toUpperCase());
if (connection.tracingLevel != null)
{
Logger snowflakeLogger = Logger.getLogger("net.snowflake");
snowflakeLogger.setLevel(connection.tracingLevel);
}*/
}
} else {
this.sfBaseStatement.executeSetProperty(sql);
}
}
public SFBaseStatement getSFBaseStatement() throws SQLException {
return sfBaseStatement;
}
// Convenience method to return an SFStatement-typed SFStatementInterface object, but
// performs the type-checking as necessary.
public SFStatement getSfStatement() throws SnowflakeSQLException {
if (sfBaseStatement instanceof SFStatement) {
return (SFStatement) sfBaseStatement;
}
throw new SnowflakeSQLException(
"getSfStatement() called with a different SFStatementInterface type.");
}
public void removeClosedResultSet(ResultSet rs) {
openResultSets.remove(rs);
}
final class BatchEntry {
private final String sql;
private final Map parameterBindings;
BatchEntry(String sql, Map parameterBindings) {
this.sql = sql;
this.parameterBindings = parameterBindings;
}
public String getSql() {
return sql;
}
public Map getParameterBindings() {
return parameterBindings;
}
}
/**
* This is a No Operation Statement to avoid null pointer exception for sessionless result set.
*/
public static class NoOpSnowflakeStatementV1 extends SnowflakeStatementV1 {
public NoOpSnowflakeStatementV1() throws SQLException {
super(
null,
ResultSet.TYPE_FORWARD_ONLY,
ResultSet.CONCUR_READ_ONLY,
ResultSet.CLOSE_CURSORS_AT_COMMIT);
}
private void throwExceptionAnyway() throws SQLException {
throw new SQLException(
"This is a dummy SnowflakeStatement, " + "no member function should be called for it.");
}
@Override
public ResultSet executeQuery(String sql) throws SQLException {
throwExceptionAnyway();
return null;
}
@Override
public int executeUpdate(String sql) throws SQLException {
throwExceptionAnyway();
return 0;
}
@Override
public long executeLargeUpdate(String sql) throws SQLException {
throwExceptionAnyway();
return 0;
}
@Override
public String getQueryID() {
return "invalid_query_id";
}
@Override
public List getBatchQueryIDs() {
return new ArrayList<>();
}
@Override
public boolean execute(String sql) throws SQLException {
throwExceptionAnyway();
return false;
}
@Override
public boolean execute(String sql, int autoGeneratedKeys) throws SQLException {
throwExceptionAnyway();
return false;
}
@Override
public boolean execute(String sql, int[] columnIndexes) throws SQLException {
throwExceptionAnyway();
return false;
}
@Override
public boolean execute(String sql, String[] columnNames) throws SQLException {
throwExceptionAnyway();
return false;
}
@Override
public int[] executeBatch() throws SQLException {
throwExceptionAnyway();
return new int[1];
}
@Override
public long[] executeLargeBatch() throws SQLException {
throwExceptionAnyway();
return new long[1];
}
@Override
public int executeUpdate(String sql, int autoGeneratedKeys) throws SQLException {
throwExceptionAnyway();
return 0;
}
@Override
public long executeLargeUpdate(String sql, int autoGeneratedKeys) throws SQLException {
throwExceptionAnyway();
return 0;
}
@Override
public int executeUpdate(String sql, int[] columnIndexes) throws SQLException {
throwExceptionAnyway();
return 0;
}
@Override
public long executeLargeUpdate(String sql, int[] columnIndexes) throws SQLException {
throwExceptionAnyway();
return 0;
}
@Override
public int executeUpdate(String sql, String[] columnNames) throws SQLException {
throwExceptionAnyway();
return 0;
}
@Override
public long executeLargeUpdate(String sql, String[] columnNames) throws SQLException {
throwExceptionAnyway();
return 0;
}
@Override
public Connection getConnection() throws SQLException {
throwExceptionAnyway();
return null;
}
@Override
public int getFetchDirection() throws SQLException {
throwExceptionAnyway();
return 0;
}
@Override
public int getFetchSize() throws SQLException {
throwExceptionAnyway();
return 0;
}
@Override
public ResultSet getGeneratedKeys() throws SQLException {
throwExceptionAnyway();
return null;
}
@Override
public int getMaxFieldSize() throws SQLException {
throwExceptionAnyway();
return 0;
}
@Override
public int getMaxRows() throws SQLException {
throwExceptionAnyway();
return 0;
}
@Override
public boolean getMoreResults() throws SQLException {
throwExceptionAnyway();
return false;
}
@Override
public boolean getMoreResults(int current) throws SQLException {
throwExceptionAnyway();
return false;
}
@Override
public int getQueryTimeout() throws SQLException {
throwExceptionAnyway();
return 0;
}
@Override
public ResultSet getResultSet() throws SQLException {
throwExceptionAnyway();
return null;
}
@Override
public int getResultSetConcurrency() throws SQLException {
throwExceptionAnyway();
return 0;
}
@Override
public int getResultSetHoldability() throws SQLException {
throwExceptionAnyway();
return 0;
}
@Override
public int getResultSetType() throws SQLException {
throwExceptionAnyway();
return 0;
}
@Override
public int getUpdateCount() throws SQLException {
throwExceptionAnyway();
return 0;
}
@Override
public long getLargeUpdateCount() throws SQLException {
throwExceptionAnyway();
return 0;
}
@Override
public SQLWarning getWarnings() throws SQLException {
throwExceptionAnyway();
return null;
}
@Override
public boolean isClosed() throws SQLException {
throwExceptionAnyway();
return false;
}
@Override
public boolean isPoolable() throws SQLException {
throwExceptionAnyway();
return false;
}
@Override
public void setCursorName(String name) throws SQLException {}
@Override
public void setEscapeProcessing(boolean enable) throws SQLException {}
@Override
public void setFetchDirection(int direction) throws SQLException {}
@Override
public void setFetchSize(int rows) throws SQLException {}
@Override
public void setMaxFieldSize(int max) throws SQLException {}
@Override
public void setMaxRows(int max) throws SQLException {}
@Override
public void setPoolable(boolean poolable) throws SQLException {}
@Override
public void setParameter(String name, Object value) throws SQLException {}
@Override
public void setQueryTimeout(int seconds) throws SQLException {}
@Override
public boolean isWrapperFor(Class iface) throws SQLException {
logger.debug("isWrapperFor(Class iface)", false);
return iface.isInstance(this);
}
@SuppressWarnings("unchecked")
@Override
public T unwrap(Class iface) throws SQLException {
logger.debug("unwrap(Class iface)", false);
if (!iface.isInstance(this)) {
throw new SQLException(
this.getClass().getName() + " not unwrappable from " + iface.getName());
}
return (T) this;
}
@Override
public void closeOnCompletion() throws SQLException {}
@Override
public boolean isCloseOnCompletion() throws SQLException {
throwExceptionAnyway();
return false;
}
@Override
public void close() throws SQLException {}
@Override
public void close(boolean removeClosedStatementFromConnection) throws SQLException {}
@Override
public void cancel() throws SQLException {}
@Override
public void clearWarnings() throws SQLException {}
@Override
public void addBatch(String sql) throws SQLException {}
@Override
public void clearBatch() throws SQLException {}
@Override
public void removeClosedResultSet(ResultSet rs) {}
}
}