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SQLServerPreparedStatement.java
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/*
* Microsoft JDBC Driver for SQL Server
*
* Copyright(c) Microsoft Corporation All rights reserved.
*
* This program is made available under the terms of the MIT License. See the LICENSE file in the project root for more information.
*/
package com.microsoft.sqlserver.jdbc;
import java.io.InputStream;
import java.io.Reader;
import java.math.BigDecimal;
import java.sql.BatchUpdateException;
import java.sql.NClob;
import java.sql.ParameterMetaData;
import java.sql.ResultSet;
import java.sql.RowId;
import java.sql.SQLException;
import java.sql.SQLFeatureNotSupportedException;
import java.sql.SQLXML;
import java.sql.Statement;
import java.text.MessageFormat;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.HashMap;
import java.util.Map;
import java.util.Vector;
import java.util.logging.Level;
/**
* SQLServerPreparedStatement provides JDBC prepared statement functionality. SQLServerPreparedStatement provides methods for the user to supply
* parameters as any native Java type and many Java object types.
* <p>
* SQLServerPreparedStatement prepares a statement using SQL Server's sp_prepexec and re-uses the returned statement handle for each subsequent
* execution of the statement (typically using different parameters provided by the user)
* <p>
* SQLServerPreparedStatement supports batching whereby a set of prepared statements are executed in a single database round trip to improve runtime
* performance.
* <p>
* The API javadoc for JDBC API methods that this class implements are not repeated here. Please see Sun's JDBC API interfaces javadoc for those
* details.
*/
public class SQLServerPreparedStatement extends SQLServerStatement implements ISQLServerPreparedStatement {
/** Flag to indicate that it is an internal query to retrieve encryption metadata. */
boolean isInternalEncryptionQuery = false;
/** delimiter for multiple statements in a single batch */
private static final int BATCH_STATEMENT_DELIMITER_TDS_71 = 0x80;
private static final int BATCH_STATEMENT_DELIMITER_TDS_72 = 0xFF;
final int nBatchStatementDelimiter = BATCH_STATEMENT_DELIMITER_TDS_72;
/** the user's prepared sql syntax */
private String sqlCommand;
/** The prepared type definitions */
private String preparedTypeDefinitions;
/** The users SQL statement text */
final String userSQL;
/** SQL statement with expanded parameter tokens */
private String preparedSQL;
/**
* Array with parameter names generated in buildParamTypeDefinitions For mapping encryption information to parameters, as the second result set
* returned by sp_describe_parameter_encryption doesn't depend on order of input parameter
**/
private ArrayList<String> parameterNames;
/** Set to true if the statement is a stored procedure call that expects a return value */
final boolean bReturnValueSyntax;
/**
* The number of OUT parameters to skip in the response to get to the first app-declared OUT parameter.
*
* When executing prepared and callable statements and/or statements that produce cursored results, the first OUT parameters returned by the
* server contain the internal values like the prepared statement handle and the cursor ID and row count. This value indicates how many of those
* internal OUT parameters were in the response.
*/
int outParamIndexAdjustment;
/** Set of parameter values in the current batch */
ArrayList<Parameter[]> batchParamValues;
/** The prepared statement handle returned by the server */
private int prepStmtHandle = 0;
/** Flag set to true when statement execution is expected to return the prepared statement handle */
private boolean expectPrepStmtHandle = false;
// Internal function used in tracing
String getClassNameInternal() {
return "SQLServerPreparedStatement";
}
/**
* Create a new prepaed statement.
*
* @param conn
* the connection
* @param sql
* the user's sql
* @param nRSType
* the result set type
* @param nRSConcur
* the result set concurrency
* @param stmtColEncSetting
* the statement column encryption setting
* @throws SQLServerException
* when an error occurs
*/
SQLServerPreparedStatement(SQLServerConnection conn,
String sql,
int nRSType,
int nRSConcur,
SQLServerStatementColumnEncryptionSetting stmtColEncSetting) throws SQLServerException {
super(conn, nRSType, nRSConcur, stmtColEncSetting);
stmtPoolable = true;
sqlCommand = sql;
JDBCSyntaxTranslator translator = new JDBCSyntaxTranslator();
sql = translator.translate(sql);
procedureName = translator.getProcedureName(); // may return null
bReturnValueSyntax = translator.hasReturnValueSyntax();
userSQL = sql;
initParams(userSQL);
}
/**
* Close the prepared statement's prepared handle.
*/
private void closePreparedHandle() {
if (0 == prepStmtHandle)
return;
// If the connection is already closed, don't bother trying to close
// the prepared handle. We won't be able to, and it's already closed
// on the server anyway.
if (connection.isSessionUnAvailable()) {
if (getStatementLogger().isLoggable(java.util.logging.Level.FINER))
getStatementLogger().finer(this + ": Not closing PreparedHandle:" + prepStmtHandle + "; connection is already closed.");
}
else {
if (getStatementLogger().isLoggable(java.util.logging.Level.FINER))
getStatementLogger().finer(this + ": Closing PreparedHandle:" + prepStmtHandle);
final class PreparedHandleClose extends UninterruptableTDSCommand {
PreparedHandleClose() {
super("closePreparedHandle");
}
final boolean doExecute() throws SQLServerException {
TDSWriter tdsWriter = startRequest(TDS.PKT_RPC);
tdsWriter.writeShort((short) 0xFFFF); // procedure name length -> use ProcIDs
tdsWriter.writeShort(executedSqlDirectly ? TDS.PROCID_SP_UNPREPARE : TDS.PROCID_SP_CURSORUNPREPARE);
tdsWriter.writeByte((byte) 0); // RPC procedure option 1
tdsWriter.writeByte((byte) 0); // RPC procedure option 2
tdsWriter.writeRPCInt(null, new Integer(prepStmtHandle), false);
prepStmtHandle = 0;
TDSParser.parse(startResponse(), getLogContext());
return true;
}
}
// Try to close the server cursor. Any failure is caught, logged, and ignored.
try {
executeCommand(new PreparedHandleClose());
}
catch (SQLServerException e) {
if (getStatementLogger().isLoggable(java.util.logging.Level.FINER))
getStatementLogger().log(Level.FINER, this + ": Error (ignored) closing PreparedHandle:" + prepStmtHandle, e);
}
if (getStatementLogger().isLoggable(java.util.logging.Level.FINER))
getStatementLogger().finer(this + ": Closed PreparedHandle:" + prepStmtHandle);
}
}
/**
* Closes this prepared statement.
*
* Note that the public Statement.close() method performs all of the cleanup work through this internal method which cannot throw any exceptions.
* This is done deliberately to ensure that ALL of the object's client-side and server-side state is cleaned up as best as possible, even under
* conditions which would normally result in exceptions being thrown.
*/
final void closeInternal() {
super.closeInternal();
// If we have a prepared statement handle, close it.
closePreparedHandle();
// Clean up client-side state
batchParamValues = null;
}
/**
* Intialize the statement parameters.
*
* @param sql
*/
/* L0 */ final void initParams(String sql) {
int nParams = 0;
// Figure out the expected number of parameters by counting the
// parameter placeholders in the SQL string.
int offset = -1;
while ((offset = ParameterUtils.scanSQLForChar('?', sql, ++offset)) < sql.length())
++nParams;
inOutParam = new Parameter[nParams];
for (int i = 0; i < nParams; i++) {
inOutParam[i] = new Parameter(Util.shouldHonorAEForParameters(stmtColumnEncriptionSetting, connection));
}
}
/* L0 */ public final void clearParameters() throws SQLServerException {
loggerExternal.entering(getClassNameLogging(), "clearParameters");
checkClosed();
int i;
if (inOutParam == null)
return;
for (i = 0; i < inOutParam.length; i++) {
inOutParam[i].clearInputValue();
}
loggerExternal.exiting(getClassNameLogging(), "clearParameters");
}
/**
* Determines whether the statement needs to be reprepared based on a change in any of the type definitions of any of the parameters due to
* changes in scale, length, etc., and, if so, sets the new type definition string.
*/
private boolean buildPreparedStrings(Parameter[] params,
boolean renewDefinition) throws SQLServerException {
String newTypeDefinitions = buildParamTypeDefinitions(params, renewDefinition);
if (null != preparedTypeDefinitions && newTypeDefinitions.equals(preparedTypeDefinitions))
return false;
preparedTypeDefinitions = newTypeDefinitions;
/* Replace the parameter marker '?' with the param numbers @p1, @p2 etc */
preparedSQL = connection.replaceParameterMarkers(userSQL, params, bReturnValueSyntax);
if (bRequestedGeneratedKeys)
preparedSQL = preparedSQL + identityQuery;
return true;
}
/**
* Build the parameter type definitons for a JDBC prepared statement that will be used to prepare the statement.
*
* @param params
* the statement parameters
* @param renewDefinition
* True if renewing parameter definition, False otherwise
* @throws SQLServerException
* when an error occurs.
* @return the required data type defintions.
*/
private String buildParamTypeDefinitions(Parameter[] params,
boolean renewDefinition) throws SQLServerException {
StringBuilder sb = new StringBuilder();
int nCols = params.length;
char cParamName[] = new char[10];
parameterNames = new ArrayList<String>();
for (int i = 0; i < nCols; i++) {
if (i > 0)
sb.append(',');
int l = SQLServerConnection.makeParamName(i, cParamName, 0);
for (int j = 0; j < l; j++)
sb.append(cParamName[j]);
sb.append(' ');
parameterNames.add(i, (new String(cParamName)).trim());
params[i].renewDefinition = renewDefinition;
String typeDefinition = params[i].getTypeDefinition(connection, resultsReader());
if (null == typeDefinition) {
MessageFormat form = new MessageFormat(SQLServerException.getErrString("R_valueNotSetForParameter"));
Object[] msgArgs = {new Integer(i + 1)};
SQLServerException.makeFromDriverError(connection, this, form.format(msgArgs), null, false);
}
sb.append(typeDefinition);
if (params[i].isOutput())
sb.append(" OUTPUT");
}
return sb.toString();
}
/**
* Execute a query.
*
* @throws SQLServerException
* when an error occurs
* @return ResultSet
*/
public java.sql.ResultSet executeQuery() throws SQLServerException {
loggerExternal.entering(getClassNameLogging(), "executeQuery");
if (loggerExternal.isLoggable(Level.FINER) && Util.IsActivityTraceOn()) {
loggerExternal.finer(toString() + " ActivityId: " + ActivityCorrelator.getNext().toString());
}
checkClosed();
executeStatement(new PrepStmtExecCmd(this, EXECUTE_QUERY));
loggerExternal.exiting(getClassNameLogging(), "executeQuery");
return resultSet;
}
/**
* Execute a query without cursoring for metadata.
*
* @throws SQLServerException
* @return ResultSet
*/
final java.sql.ResultSet executeQueryInternal() throws SQLServerException {
checkClosed();
executeStatement(new PrepStmtExecCmd(this, EXECUTE_QUERY_INTERNAL));
return resultSet;
}
public int executeUpdate() throws SQLServerException {
loggerExternal.entering(getClassNameLogging(), "executeUpdate");
if (loggerExternal.isLoggable(Level.FINER) && Util.IsActivityTraceOn()) {
loggerExternal.finer(toString() + " ActivityId: " + ActivityCorrelator.getNext().toString());
}
checkClosed();
executeStatement(new PrepStmtExecCmd(this, EXECUTE_UPDATE));
// this shouldn't happen, caller probably meant to call executeLargeUpdate
if (updateCount < Integer.MIN_VALUE || updateCount > Integer.MAX_VALUE)
SQLServerException.makeFromDriverError(connection, this, SQLServerException.getErrString("R_updateCountOutofRange"), null, true);
loggerExternal.exiting(getClassNameLogging(), "executeUpdate", new Long(updateCount));
return (int) updateCount;
}
public long executeLargeUpdate() throws SQLServerException {
DriverJDBCVersion.checkSupportsJDBC42();
loggerExternal.entering(getClassNameLogging(), "executeLargeUpdate");
if (loggerExternal.isLoggable(Level.FINER) && Util.IsActivityTraceOn()) {
loggerExternal.finer(toString() + " ActivityId: " + ActivityCorrelator.getNext().toString());
}
checkClosed();
executeStatement(new PrepStmtExecCmd(this, EXECUTE_UPDATE));
loggerExternal.exiting(getClassNameLogging(), "executeLargeUpdate", new Long(updateCount));
return updateCount;
}
/**
* Execute a query or non query statement.
*
* @throws SQLServerException
* when an error occurs
* @return true if the statement returned a result set
*/
public boolean execute() throws SQLServerException {
loggerExternal.entering(getClassNameLogging(), "execute");
if (loggerExternal.isLoggable(Level.FINER) && Util.IsActivityTraceOn()) {
loggerExternal.finer(toString() + " ActivityId: " + ActivityCorrelator.getNext().toString());
}
checkClosed();
executeStatement(new PrepStmtExecCmd(this, EXECUTE));
loggerExternal.exiting(getClassNameLogging(), "execute", Boolean.valueOf(null != resultSet));
return null != resultSet;
}
private final class PrepStmtExecCmd extends TDSCommand {
private final SQLServerPreparedStatement stmt;
PrepStmtExecCmd(SQLServerPreparedStatement stmt,
int executeMethod) {
super(stmt.toString() + " executeXXX", queryTimeout);
this.stmt = stmt;
stmt.executeMethod = executeMethod;
}
final boolean doExecute() throws SQLServerException {
stmt.doExecutePreparedStatement(this);
return false;
}
final void processResponse(TDSReader tdsReader) throws SQLServerException {
ensureExecuteResultsReader(tdsReader);
processExecuteResults();
}
}
final void doExecutePreparedStatement(PrepStmtExecCmd command) throws SQLServerException {
resetForReexecute();
// If this request might be a query (as opposed to an update) then make
// sure we set the max number of rows and max field size for any ResultSet
// that may be returned.
//
// If the app uses Statement.execute to execute an UPDATE or DELETE statement
// and has called Statement.setMaxRows to limit the number of rows from an
// earlier query, then the number of rows updated/deleted will be limited as
// well.
//
// Note: similar logic in SQLServerStatement.doExecuteStatement
setMaxRowsAndMaxFieldSize();
if (loggerExternal.isLoggable(Level.FINER) && Util.IsActivityTraceOn()) {
loggerExternal.finer(toString() + " ActivityId: " + ActivityCorrelator.getNext().toString());
}
boolean hasNewTypeDefinitions = buildPreparedStrings(inOutParam, false);
if ((Util.shouldHonorAEForParameters(stmtColumnEncriptionSetting, connection)) && (0 < inOutParam.length) && !isInternalEncryptionQuery) {
getParameterEncryptionMetadata(inOutParam);
// maxRows is set to 0 when retreving encryption metadata,
// need to set it back
setMaxRowsAndMaxFieldSize();
// fix an issue when inserting unicode into non-encrypted nchar column using setString() and AE is on on Connection
buildPreparedStrings(inOutParam, true);
}
// Start the request and detach the response reader so that we can
// continue using it after we return.
TDSWriter tdsWriter = command.startRequest(TDS.PKT_RPC);
doPrepExec(tdsWriter, inOutParam, hasNewTypeDefinitions);
ensureExecuteResultsReader(command.startResponse(getIsResponseBufferingAdaptive()));
startResults();
getNextResult();
if (EXECUTE_QUERY == executeMethod && null == resultSet) {
SQLServerException.makeFromDriverError(connection, this, SQLServerException.getErrString("R_noResultset"), null, true);
}
else if (EXECUTE_UPDATE == executeMethod && null != resultSet) {
SQLServerException.makeFromDriverError(connection, this, SQLServerException.getErrString("R_resultsetGeneratedForUpdate"), null, false);
}
}
/**
* Consume the OUT parameter for the statement object itself.
*
* When a prepared statement handle is expected as the first OUT parameter from PreparedStatement or CallableStatement execution, then it gets
* consumed here.
*/
boolean consumeExecOutParam(TDSReader tdsReader) throws SQLServerException {
final class PrepStmtExecOutParamHandler extends StmtExecOutParamHandler {
boolean onRetValue(TDSReader tdsReader) throws SQLServerException {
// If no prepared statement handle is expected at this time
// then don't consume this OUT parameter as it does not contain
// a prepared statement handle.
if (!expectPrepStmtHandle)
return super.onRetValue(tdsReader);
// If a prepared statement handle is expected then consume it
// and continue processing.
expectPrepStmtHandle = false;
Parameter param = new Parameter(Util.shouldHonorAEForParameters(stmtColumnEncriptionSetting, connection));
param.skipRetValStatus(tdsReader);
prepStmtHandle = param.getInt(tdsReader);
param.skipValue(tdsReader, true);
if (getStatementLogger().isLoggable(java.util.logging.Level.FINER))
getStatementLogger().finer(toString() + ": Setting PreparedHandle:" + prepStmtHandle);
return true;
}
}
if (expectPrepStmtHandle || expectCursorOutParams) {
TDSParser.parse(tdsReader, new PrepStmtExecOutParamHandler());
return true;
}
return false;
}
/**
* Send the statement parameters by RPC
*/
void sendParamsByRPC(TDSWriter tdsWriter,
Parameter[] params) throws SQLServerException {
char cParamName[];
for (int index = 0; index < params.length; index++) {
if (JDBCType.TVP == params[index].getJdbcType()) {
cParamName = new char[10];
int paramNameLen = SQLServerConnection.makeParamName(index, cParamName, 0);
tdsWriter.writeByte((byte) paramNameLen);
tdsWriter.writeString(new String(cParamName, 0, paramNameLen));
}
params[index].sendByRPC(tdsWriter, connection);
}
}
private void buildServerCursorPrepExecParams(TDSWriter tdsWriter) throws SQLServerException {
if (getStatementLogger().isLoggable(java.util.logging.Level.FINE))
getStatementLogger().fine(toString() + ": calling sp_cursorprepexec: PreparedHandle:" + prepStmtHandle + ", SQL:" + preparedSQL);
expectPrepStmtHandle = true;
executedSqlDirectly = false;
expectCursorOutParams = true;
outParamIndexAdjustment = 7;
tdsWriter.writeShort((short) 0xFFFF); // procedure name length -> use ProcIDs
tdsWriter.writeShort(TDS.PROCID_SP_CURSORPREPEXEC);
tdsWriter.writeByte((byte) 0); // RPC procedure option 1
tdsWriter.writeByte((byte) 0); // RPC procedure option 2
// <prepared handle>
// IN (reprepare): Old handle to unprepare before repreparing
// OUT: The newly prepared handle
tdsWriter.writeRPCInt(null, new Integer(prepStmtHandle), true);
prepStmtHandle = 0;
// <cursor> OUT
tdsWriter.writeRPCInt(null, new Integer(0), true); // cursor ID (OUTPUT)
// <formal parameter defn> IN
tdsWriter.writeRPCStringUnicode((preparedTypeDefinitions.length() > 0) ? preparedTypeDefinitions : null);
// <stmt> IN
tdsWriter.writeRPCStringUnicode(preparedSQL);
// <scrollopt> IN
// Note: we must strip out SCROLLOPT_PARAMETERIZED_STMT if we don't
// actually have any parameters.
tdsWriter.writeRPCInt(null,
new Integer(getResultSetScrollOpt() & ~((0 == preparedTypeDefinitions.length()) ? TDS.SCROLLOPT_PARAMETERIZED_STMT : 0)), false);
// <ccopt> IN
tdsWriter.writeRPCInt(null, new Integer(getResultSetCCOpt()), false);
// <rowcount> OUT
tdsWriter.writeRPCInt(null, new Integer(0), true);
}
private void buildPrepExecParams(TDSWriter tdsWriter) throws SQLServerException {
if (getStatementLogger().isLoggable(java.util.logging.Level.FINE))
getStatementLogger().fine(toString() + ": calling sp_prepexec: PreparedHandle:" + prepStmtHandle + ", SQL:" + preparedSQL);
expectPrepStmtHandle = true;
executedSqlDirectly = true;
expectCursorOutParams = false;
outParamIndexAdjustment = 3;
tdsWriter.writeShort((short) 0xFFFF); // procedure name length -> use ProcIDs
tdsWriter.writeShort(TDS.PROCID_SP_PREPEXEC);
tdsWriter.writeByte((byte) 0); // RPC procedure option 1
tdsWriter.writeByte((byte) 0); // RPC procedure option 2
// <prepared handle>
// IN (reprepare): Old handle to unprepare before repreparing
// OUT: The newly prepared handle
tdsWriter.writeRPCInt(null, new Integer(prepStmtHandle), true);
prepStmtHandle = 0;
// <formal parameter defn> IN
tdsWriter.writeRPCStringUnicode((preparedTypeDefinitions.length() > 0) ? preparedTypeDefinitions : null);
// <stmt> IN
tdsWriter.writeRPCStringUnicode(preparedSQL);
}
private void buildServerCursorExecParams(TDSWriter tdsWriter) throws SQLServerException {
if (getStatementLogger().isLoggable(java.util.logging.Level.FINE))
getStatementLogger().fine(toString() + ": calling sp_cursorexecute: PreparedHandle:" + prepStmtHandle + ", SQL:" + preparedSQL);
expectPrepStmtHandle = false;
executedSqlDirectly = false;
expectCursorOutParams = true;
outParamIndexAdjustment = 5;
tdsWriter.writeShort((short) 0xFFFF); // procedure name length -> use ProcIDs
tdsWriter.writeShort(TDS.PROCID_SP_CURSOREXECUTE);
tdsWriter.writeByte((byte) 0); // RPC procedure option 1
tdsWriter.writeByte((byte) 0); // RPC procedure option 2 */
// <handle> IN
assert 0 != prepStmtHandle;
tdsWriter.writeRPCInt(null, new Integer(prepStmtHandle), false);
// <cursor> OUT
tdsWriter.writeRPCInt(null, new Integer(0), true);
// <scrollopt> IN
tdsWriter.writeRPCInt(null, new Integer(getResultSetScrollOpt() & ~TDS.SCROLLOPT_PARAMETERIZED_STMT), false);
// <ccopt> IN
tdsWriter.writeRPCInt(null, new Integer(getResultSetCCOpt()), false);
// <rowcount> OUT
tdsWriter.writeRPCInt(null, new Integer(0), true);
}
private void buildExecParams(TDSWriter tdsWriter) throws SQLServerException {
if (getStatementLogger().isLoggable(java.util.logging.Level.FINE))
getStatementLogger().fine(toString() + ": calling sp_execute: PreparedHandle:" + prepStmtHandle + ", SQL:" + preparedSQL);
expectPrepStmtHandle = false;
executedSqlDirectly = true;
expectCursorOutParams = false;
outParamIndexAdjustment = 1;
tdsWriter.writeShort((short) 0xFFFF); // procedure name length -> use ProcIDs
tdsWriter.writeShort(TDS.PROCID_SP_EXECUTE);
tdsWriter.writeByte((byte) 0); // RPC procedure option 1
tdsWriter.writeByte((byte) 0); // RPC procedure option 2 */
// <handle> IN
assert 0 != prepStmtHandle;
tdsWriter.writeRPCInt(null, new Integer(prepStmtHandle), false);
}
private void getParameterEncryptionMetadata(Parameter[] params) throws SQLServerException {
/*
* The parameter list is created from the data types provided by the user for the parameters. the data types do not need to be the same as in
* the table definition. Also, when string is sent to an int field, the parameter is defined as nvarchar(<size of string>). Same for varchar
* datatypes, exact length is used.
*/
SQLServerResultSet rs = null;
SQLServerCallableStatement stmt = null;
assert connection != null : "Connection should not be null";
try {
if (getStatementLogger().isLoggable(java.util.logging.Level.FINE)) {
getStatementLogger().fine("Calling stored procedure sp_describe_parameter_encryption to get parameter encryption information.");
}
stmt = (SQLServerCallableStatement) connection.prepareCall("exec sp_describe_parameter_encryption ?,?");
stmt.isInternalEncryptionQuery = true;
stmt.setNString(1, preparedSQL);
stmt.setNString(2, preparedTypeDefinitions);
rs = (SQLServerResultSet) stmt.executeQueryInternal();
}
catch (SQLException e) {
if (e instanceof SQLServerException) {
throw (SQLServerException) e;
}
else {
throw new SQLServerException(SQLServerException.getErrString("R_UnableRetrieveParameterMetadata"), null, 0, e);
}
}
if (null == rs) {
// No results. Meaning no parameter.
// Should never happen.
return;
}
Map<Integer, CekTableEntry> cekList = new HashMap<Integer, CekTableEntry>();
CekTableEntry cekEntry = null;
try {
while (rs.next()) {
int currentOrdinal = rs.getInt(DescribeParameterEncryptionResultSet1.KeyOrdinal.value());
if (!cekList.containsKey(currentOrdinal)) {
cekEntry = new CekTableEntry(currentOrdinal);
cekList.put(cekEntry.ordinal, cekEntry);
}
else {
cekEntry = cekList.get(currentOrdinal);
}
cekEntry.add(rs.getBytes(DescribeParameterEncryptionResultSet1.EncryptedKey.value()),
rs.getInt(DescribeParameterEncryptionResultSet1.DbId.value()), rs.getInt(DescribeParameterEncryptionResultSet1.KeyId.value()),
rs.getInt(DescribeParameterEncryptionResultSet1.KeyVersion.value()),
rs.getBytes(DescribeParameterEncryptionResultSet1.KeyMdVersion.value()),
rs.getString(DescribeParameterEncryptionResultSet1.KeyPath.value()),
rs.getString(DescribeParameterEncryptionResultSet1.ProviderName.value()),
rs.getString(DescribeParameterEncryptionResultSet1.KeyEncryptionAlgorithm.value()));
}
if (getStatementLogger().isLoggable(java.util.logging.Level.FINE)) {
getStatementLogger().fine("Matadata of CEKs is retrieved.");
}
}
catch (SQLException e) {
if (e instanceof SQLServerException) {
throw (SQLServerException) e;
}
else {
throw new SQLServerException(SQLServerException.getErrString("R_UnableRetrieveParameterMetadata"), null, 0, e);
}
}
// Process the second resultset.
if (!stmt.getMoreResults()) {
throw new SQLServerException(this, SQLServerException.getErrString("R_UnexpectedDescribeParamFormat"), null, 0, false);
}
// Parameter count in the result set.
int paramCount = 0;
try {
rs = (SQLServerResultSet) stmt.getResultSet();
while (rs.next()) {
paramCount++;
String paramName = rs.getString(DescribeParameterEncryptionResultSet2.ParameterName.value());
int paramIndex = parameterNames.indexOf(paramName);
int cekOrdinal = rs.getInt(DescribeParameterEncryptionResultSet2.ColumnEncryptionKeyOrdinal.value());
cekEntry = cekList.get(cekOrdinal);
// cekEntry will be null if none of the parameters are encrypted.
if ((null != cekEntry) && (cekList.size() < cekOrdinal)) {
MessageFormat form = new MessageFormat(SQLServerException.getErrString("R_InvalidEncryptionKeyOridnal"));
Object[] msgArgs = {cekOrdinal, cekEntry.getSize()};
throw new SQLServerException(this, form.format(msgArgs), null, 0, false);
}
SQLServerEncryptionType encType = SQLServerEncryptionType
.of((byte) rs.getInt(DescribeParameterEncryptionResultSet2.ColumnEncrytionType.value()));
if (SQLServerEncryptionType.PlainText != encType) {
params[paramIndex].cryptoMeta = new CryptoMetadata(cekEntry, (short) cekOrdinal,
(byte) rs.getInt(DescribeParameterEncryptionResultSet2.ColumnEncryptionAlgorithm.value()), null, encType.value,
(byte) rs.getInt(DescribeParameterEncryptionResultSet2.NormalizationRuleVersion.value()));
// Decrypt the symmetric key.(This will also validate and throw if needed).
SQLServerSecurityUtility.decryptSymmetricKey(params[paramIndex].cryptoMeta, connection);
}
else {
if (true == params[paramIndex].getForceEncryption()) {
MessageFormat form = new MessageFormat(
SQLServerException.getErrString("R_ForceEncryptionTrue_HonorAETrue_UnencryptedColumn"));
Object[] msgArgs = {userSQL, paramIndex + 1};
SQLServerException.makeFromDriverError(connection, this, form.format(msgArgs), null, true);
}
}
}
if (getStatementLogger().isLoggable(java.util.logging.Level.FINE)) {
getStatementLogger().fine("Parameter encryption metadata is set.");
}
}
catch (SQLException e) {
if (e instanceof SQLServerException) {
throw (SQLServerException) e;
}
else {
throw new SQLServerException(SQLServerException.getErrString("R_UnableRetrieveParameterMetadata"), null, 0, e);
}
}
if (paramCount != params.length) {
// Encryption metadata wasn't sent by the server.
// We expect the metadata to be sent for all the parameters in the original sp_describe_parameter_encryption.
// For parameters that don't need encryption, the encryption type is set to plaintext.
MessageFormat form = new MessageFormat(SQLServerException.getErrString("R_MissingParamEncryptionMetadata"));
Object[] msgArgs = {userSQL};
throw new SQLServerException(this, form.format(msgArgs), null, 0, false);
}
// Null check for rs is done already.
rs.close();
if (null != stmt) {
stmt.close();
}
connection.resetCurrentCommand();
}
private boolean doPrepExec(TDSWriter tdsWriter,
Parameter[] params,
boolean hasNewTypeDefinitions) throws SQLServerException {
boolean needsPrepare = hasNewTypeDefinitions || 0 == prepStmtHandle;
if (needsPrepare) {
if (isCursorable(executeMethod))
buildServerCursorPrepExecParams(tdsWriter);
else
buildPrepExecParams(tdsWriter);
}
else {
if (isCursorable(executeMethod))
buildServerCursorExecParams(tdsWriter);
else
buildExecParams(tdsWriter);
}
sendParamsByRPC(tdsWriter, params);
return needsPrepare;
}
/* L0 */ public final java.sql.ResultSetMetaData getMetaData() throws SQLServerException {
loggerExternal.entering(getClassNameLogging(), "getMetaData");
checkClosed();
boolean rsclosed = false;
java.sql.ResultSetMetaData rsmd = null;
try {
// if the result is closed, cant get the metadata from it.
if (resultSet != null)
resultSet.checkClosed();
}
catch (SQLServerException e) {
rsclosed = true;
}
if (resultSet == null || rsclosed) {
SQLServerResultSet emptyResultSet = (SQLServerResultSet) buildExecuteMetaData();
if (null != emptyResultSet)
rsmd = emptyResultSet.getMetaData();
}
else if (resultSet != null) {
rsmd = resultSet.getMetaData();
}
loggerExternal.exiting(getClassNameLogging(), "getMetaData", rsmd);
return rsmd;
}
/**
* Retreive meta data for the statement before executing it. This is called in cases where the driver needs the meta data prior to executing the
* statement.
*
* @throws SQLServerException
* @return the result set containing the meta data
*/
/* L0 */ private ResultSet buildExecuteMetaData() throws SQLServerException {
String fmtSQL = sqlCommand;
if (fmtSQL.indexOf(LEFT_CURLY_BRACKET) >= 0) {
fmtSQL = (new JDBCSyntaxTranslator()).translate(fmtSQL);
}
ResultSet emptyResultSet = null;
try {
fmtSQL = replaceMarkerWithNull(fmtSQL);
SQLServerStatement stmt = (SQLServerStatement) connection.createStatement();
emptyResultSet = stmt.executeQueryInternal("set fmtonly on " + fmtSQL + "\nset fmtonly off");
}
catch (SQLException sqle) {
if (false == sqle.getMessage().equals(SQLServerException.getErrString("R_noResultset"))) {
// if the error is not no resultset then throw a processings error.
MessageFormat form = new MessageFormat(SQLServerException.getErrString("R_processingError"));
Object[] msgArgs = {sqle.getMessage()};
SQLServerException.makeFromDriverError(connection, this, form.format(msgArgs), null, true);
}
}
return emptyResultSet;
}
/* -------------- JDBC API Implementation ------------------ */
/**
* Set the parameter value for a statement.
*
* @param index
* The index of the parameter to set starting at 1.
* @return A reference the to Parameter object created or referenced.
* @exception SQLServerException
* The index specified was outside the number of paramters for the statement.
*/
/* L0 */ final Parameter setterGetParam(int index) throws SQLServerException {
if (index < 1 || index > inOutParam.length) {
MessageFormat form = new MessageFormat(SQLServerException.getErrString("R_indexOutOfRange"));
Object[] msgArgs = {new Integer(index)};
SQLServerException.makeFromDriverError(connection, this, form.format(msgArgs), "07009", false);
}
return inOutParam[index - 1];
}
final void setValue(int parameterIndex,
JDBCType jdbcType,
Object value,
JavaType javaType,
String tvpName) throws SQLServerException {
setterGetParam(parameterIndex).setValue(jdbcType, value, javaType, null, null, null, null, connection, false, stmtColumnEncriptionSetting,
parameterIndex, userSQL, tvpName);
}
final void setValue(int parameterIndex,
JDBCType jdbcType,
Object value,
JavaType javaType,
boolean forceEncrypt) throws SQLServerException {
setterGetParam(parameterIndex).setValue(jdbcType, value, javaType, null, null, null, null, connection, forceEncrypt,
stmtColumnEncriptionSetting, parameterIndex, userSQL, null);
}
final void setValue(int parameterIndex,
JDBCType jdbcType,
Object value,
JavaType javaType,
Integer precision,
Integer scale,
boolean forceEncrypt) throws SQLServerException {
setterGetParam(parameterIndex).setValue(jdbcType, value, javaType, null, null, precision, scale, connection, forceEncrypt,
stmtColumnEncriptionSetting, parameterIndex, userSQL, null);
}
final void setValue(int parameterIndex,
JDBCType jdbcType,
Object value,
JavaType javaType,
Calendar cal,
boolean forceEncrypt) throws SQLServerException {
setterGetParam(parameterIndex).setValue(jdbcType, value, javaType, null, cal, null, null, connection, forceEncrypt,
stmtColumnEncriptionSetting, parameterIndex, userSQL, null);
}
final void setStream(int parameterIndex,
StreamType streamType,
Object streamValue,
JavaType javaType,
long length) throws SQLServerException {
setterGetParam(parameterIndex).setValue(streamType.getJDBCType(), streamValue, javaType, new StreamSetterArgs(streamType, length), null, null,
null, connection, false, stmtColumnEncriptionSetting, parameterIndex, userSQL, null);
}
final void setSQLXMLInternal(int parameterIndex,
SQLXML value) throws SQLServerException {
setterGetParam(parameterIndex).setValue(JDBCType.SQLXML, value, JavaType.SQLXML,
new StreamSetterArgs(StreamType.SQLXML, DataTypes.UNKNOWN_STREAM_LENGTH), null, null, null, connection, false,
stmtColumnEncriptionSetting, parameterIndex, userSQL, null);
}
public final void setAsciiStream(int parameterIndex,
InputStream x) throws SQLException {
DriverJDBCVersion.checkSupportsJDBC4();
if (loggerExternal.isLoggable(java.util.logging.Level.FINER))
loggerExternal.entering(getClassNameLogging(), "setAsciiStream", new Object[] {parameterIndex, x});
checkClosed();
setStream(parameterIndex, StreamType.ASCII, x, JavaType.INPUTSTREAM, DataTypes.UNKNOWN_STREAM_LENGTH);
loggerExternal.exiting(getClassNameLogging(), "setAsciiStream");
}
public final void setAsciiStream(int n,
java.io.InputStream x,
int length) throws SQLServerException {
if (loggerExternal.isLoggable(java.util.logging.Level.FINER))
loggerExternal.entering(getClassNameLogging(), "setAsciiStream", new Object[] {n, x, length});
checkClosed();
setStream(n, StreamType.ASCII, x, JavaType.INPUTSTREAM, length);
loggerExternal.exiting(getClassNameLogging(), "setAsciiStream");
}
public final void setAsciiStream(int parameterIndex,
InputStream x,
long length) throws SQLException {
DriverJDBCVersion.checkSupportsJDBC4();
if (loggerExternal.isLoggable(java.util.logging.Level.FINER))
loggerExternal.entering(getClassNameLogging(), "setAsciiStream", new Object[] {parameterIndex, x, length});
checkClosed();
setStream(parameterIndex, StreamType.ASCII, x, JavaType.INPUTSTREAM, length);
loggerExternal.exiting(getClassNameLogging(), "setAsciiStream");
}
private Parameter getParam(int index) throws SQLServerException {
index--;
if (index < 0 || index >= inOutParam.length) {
MessageFormat form = new MessageFormat(SQLServerException.getErrString("R_indexOutOfRange"));
Object[] msgArgs = {new Integer(index + 1)};
SQLServerException.makeFromDriverError(connection, this, form.format(msgArgs), "07009", false);
}
return inOutParam[index];
}
public final void setBigDecimal(int n,
BigDecimal x) throws SQLServerException {
if (loggerExternal.isLoggable(java.util.logging.Level.FINER))
loggerExternal.entering(getClassNameLogging(), "setBigDecimal", new Object[] {n, x});
checkClosed();
setValue(n, JDBCType.DECIMAL, x, JavaType.BIGDECIMAL, false);
loggerExternal.exiting(getClassNameLogging(), "setBigDecimal");
}
/**
* Sets the designated parameter to the given <code>java.math.BigDecimal</code> value. The driver converts this to an SQL <code>NUMERIC</code>
* value when it sends it to the database.
*
* @param n
* the first parameter is 1, the second is 2, ...
* @param x
* the parameter value
* @param precision
* the precision of the column
* @param scale
* the scale of the column
* @throws SQLServerException
* when an error occurs
*/
public final void setBigDecimal(int n,
BigDecimal x,
int precision,
int scale) throws SQLServerException {
if (loggerExternal.isLoggable(java.util.logging.Level.FINER))
loggerExternal.entering(getClassNameLogging(), "setBigDecimal", new Object[] {n, x, precision, scale});
checkClosed();
setValue(n, JDBCType.DECIMAL, x, JavaType.BIGDECIMAL, precision, scale, false);
loggerExternal.exiting(getClassNameLogging(), "setBigDecimal");
}
/**
* Sets the designated parameter to the given <code>java.math.BigDecimal</code> value. The driver converts this to an SQL <code>NUMERIC</code>
* value when it sends it to the database.
*
* @param n
* the first parameter is 1, the second is 2, ...
* @param x
* the parameter value
* @param precision
* the precision of the column
* @param scale