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net.sf.jasperreports.engine.query.JRJdbcQueryExecuter Maven / Gradle / Ivy
/*
* JasperReports - Free Java Reporting Library.
* Copyright (C) 2001 - 2022 TIBCO Software Inc. All rights reserved.
* http://www.jaspersoft.com
*
* Unless you have purchased a commercial license agreement from Jaspersoft,
* the following license terms apply:
*
* This program is part of JasperReports.
*
* JasperReports is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* JasperReports is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with JasperReports. If not, see
* This query executer implementation offers built-in support for SQL queries.
*
* @author Teodor Danciu ([email protected] )
*/
public class JRJdbcQueryExecuter extends JRAbstractQueryExecuter
{
private static final Log log = LogFactory.getLog(JRJdbcQueryExecuter.class);
public static final String EXCEPTION_MESSAGE_KEY_MULTI_PARAMETERS_CANNOT_CONTAIN_NULL_VALUES = "query.multi.parameters.cannot.contain.null.values";
public static final String EXCEPTION_MESSAGE_KEY_QUERY_STATEMENT_CANCEL_ERROR = "query.statement.cancel.error";
public static final String EXCEPTION_MESSAGE_KEY_QUERY_STATEMENT_EXECUTE_ERROR = "query.statement.execute.error";
public static final String EXCEPTION_MESSAGE_KEY_QUERY_STATEMENT_PREPARE_ERROR = "query.statement.prepare.error";
public static final String EXCEPTION_MESSAGE_KEY_QUERY_STATEMENT_TIMEOUT_LIMIT_EXCEEDED = "query.statement.timeout.limit.exceeded";
public static final String EXCEPTION_MESSAGE_KEY_UNEXPECTED_MULTI_PARAMETER_TYPE = "query.unexpected.multi.parameter.type";
public static final String CANONICAL_LANGUAGE = "SQL";
public static final String CLAUSE_ID_IN = "IN";
public static final String CLAUSE_ID_NOTIN = "NOTIN";
public static final String CLAUSE_ID_EQUAL = "EQUAL";
public static final String CLAUSE_ID_NOTEQUAL = "NOTEQUAL";
public static final String CLAUSE_ID_LESS = "LESS";
public static final String CLAUSE_ID_GREATER = "GREATER";
public static final String CLAUSE_ID_LESS_OR_EQUAL = "LESS]";
public static final String CLAUSE_ID_GREATER_OR_EQUAL = "[GREATER";
public static final String CLAUSE_ID_BETWEEN = "BETWEEN";
public static final String CLAUSE_ID_BETWEEN_CLOSED = "[BETWEEN]";
public static final String CLAUSE_ID_BETWEEN_LEFT_CLOSED = "[BETWEEN";
public static final String CLAUSE_ID_BETWEEN_RIGHT_CLOSED = "BETWEEN]";
protected static final String TYPE_FORWARD_ONLY = "forwardOnly";
protected static final String TYPE_SCROLL_INSENSITIVE = "scrollInsensitive";
protected static final String TYPE_SCROLL_SENSITIVE = "scrollSensitive";
protected static final String CONCUR_READ_ONLY = "readOnly";
protected static final String CONCUR_UPDATABLE = "updatable";
protected static final String HOLD_CURSORS_OVER_COMMIT = "hold";
protected static final String CLOSE_CURSORS_AT_COMMIT = "close";
protected static final String CACHED_ROWSET_CLASS = "com.sun.rowset.CachedRowSetImpl";
protected static final Pattern PROCEDURE_CALL_PATTERN = Pattern.compile("\\s*\\{\\s*call\\s+",
Pattern.MULTILINE | Pattern.CASE_INSENSITIVE);
protected Connection connection;
/**
* The statement used to fire the query.
*/
protected PreparedStatement statement;
protected ResultSet resultSet;
private boolean isCachedRowSet;
private TimeZone parametersTimeZone;
private boolean parametersTimeZoneOverride;
private TimeZone fieldsTimeZone;
private boolean fieldsTimeZoneOverride;
private boolean isProcedureCall;
private ProcedureCallHandler procedureCallHandler;
/**
*
*/
public JRJdbcQueryExecuter(
JasperReportsContext jasperReportsContext,
JRDataset dataset,
Map parameters
)
{
super(jasperReportsContext, dataset, parameters);
connection = (Connection) getParameterValue(JRParameter.REPORT_CONNECTION);
if (connection == null)
{
if (log.isWarnEnabled())
{
log.warn("The supplied java.sql.Connection object is null.");
}
}
else if (log.isDebugEnabled())
{
try
{
DatabaseMetaData metaData = connection.getMetaData();
log.debug("DB is " + metaData.getDatabaseProductName()
+ " version " + metaData.getDatabaseProductVersion()
+ " (" + metaData.getDatabaseMajorVersion()
+ "/" + metaData.getDatabaseMinorVersion() + ")");
log.debug("driver is " + metaData.getDriverName()
+ " version " + metaData.getDriverVersion()
+ " (" + metaData.getDriverMajorVersion()
+ "/" + metaData.getDriverMinorVersion() + ")");
log.debug("jdbc " + metaData.getJDBCMajorVersion()
+ "/" + metaData.getJDBCMinorVersion());
log.debug("connection URL is " + metaData.getURL());
}
catch (SQLException e)
{
log.debug("failed to read connection metadata", e);
}
}
isCachedRowSet = getBooleanParameterOrProperty(JRJdbcQueryExecuterFactory.PROPERTY_CACHED_ROWSET, false);
setTimeZone();
registerFunctions();
parseQuery();
}
/**
* Registers built-in {@link JRClauseFunction clause functions}.
* @see #registerFunctions()
* @see #appendClauseChunk(StringBuffer, String[])
*/
protected void registerFunctions()
{
// keeping empty for backwards compatibility, the functions are now registered
// as extensions by JDBCQueryClauseFunctionsExtensions
}
@Override
protected String getCanonicalQueryLanguage()
{
return CANONICAL_LANGUAGE;
}
protected void setTimeZone()
{
String timeZoneIdParam = (String) getParameterValue(JRJdbcQueryExecuterFactory.PROPERTY_TIME_ZONE, true);
String timeZoneIdProp = getPropertiesUtil().getProperty(dataset, JRJdbcQueryExecuterFactory.PROPERTY_TIME_ZONE);
if (log.isDebugEnabled())
{
log.debug("system timezone is " + TimeZone.getDefault());
log.debug("report timezone is " + getParameterValue(JRParameter.REPORT_TIME_ZONE, true));
log.debug("JDBC timezone parameter is " + timeZoneIdParam);
log.debug("JDBC timezone property is " + timeZoneIdProp);
}
String parametersTimeZoneId = (String) getParameterValue(JRJdbcQueryExecuterFactory.PROPERTY_PARAMETERS_TIME_ZONE, true);
if (log.isDebugEnabled())
{
log.debug("JDBC parameters timezone parameter is " + parametersTimeZoneId);
}
parametersTimeZoneId = parametersTimeZoneId == null ? timeZoneIdParam : parametersTimeZoneId;
if (parametersTimeZoneId != null)
{
parametersTimeZoneOverride = true;
}
else
{
parametersTimeZoneId = getPropertiesUtil().getProperty(dataset, JRJdbcQueryExecuterFactory.PROPERTY_PARAMETERS_TIME_ZONE);
if (log.isDebugEnabled())
{
log.debug("JDBC parameters timezone property is " + parametersTimeZoneId);
}
parametersTimeZoneId = parametersTimeZoneId == null ? timeZoneIdProp : parametersTimeZoneId;
}
parametersTimeZone = resolveTimeZone(parametersTimeZoneId);
if (log.isDebugEnabled())
{
log.debug("parameters timezone " + parametersTimeZone);
}
String fieldsTimeZoneId = (String) getParameterValue(JRJdbcQueryExecuterFactory.PROPERTY_FIELDS_TIME_ZONE, true);
if (log.isDebugEnabled())
{
log.debug("JDBC fields timezone parameter is " + fieldsTimeZoneId);
}
fieldsTimeZoneId = fieldsTimeZoneId == null ? timeZoneIdParam : fieldsTimeZoneId;
if (fieldsTimeZoneId != null)
{
fieldsTimeZoneOverride = true;
}
else
{
fieldsTimeZoneId = getPropertiesUtil().getProperty(dataset, JRJdbcQueryExecuterFactory.PROPERTY_FIELDS_TIME_ZONE);
if (log.isDebugEnabled())
{
log.debug("JDBC fields timezone property is " + fieldsTimeZoneId);
}
fieldsTimeZoneId = fieldsTimeZoneId == null ? timeZoneIdProp : fieldsTimeZoneId;
}
fieldsTimeZone = resolveTimeZone(fieldsTimeZoneId);
if (log.isDebugEnabled())
{
log.debug("fields timezone " + fieldsTimeZone);
}
}
protected TimeZone resolveTimeZone(String timezoneId)
{
TimeZone tz;
if (timezoneId == null || timezoneId.length() == 0)
{
tz = null;
}
else if (timezoneId.equals(JRParameter.REPORT_TIME_ZONE))
{
// using the report timezone
tz = (TimeZone) getParameterValue(JRParameter.REPORT_TIME_ZONE, true);
}
else
{
// resolving as tz ID
tz = TimeZone.getTimeZone(timezoneId);
}
return tz;
}
@Override
protected String getParameterReplacement(String parameterName)
{
return "?";
}
/* (non-Javadoc)
* @see net.sf.jasperreports.engine.util.JRQueryExecuter#createDatasource()
*/
@Override
public JRDataSource createDatasource() throws JRException
{
JRResultSetDataSource dataSource = null;
createStatement();
if (statement != null)
{
try
{
if (log.isDebugEnabled())
{
log.debug("Executing query");
}
ResultSet queryResult;
if (isProcedureCall)
{
queryResult = procedureCallHandler.execute();
}
else
{
queryResult = statement.executeQuery();
}
if (log.isDebugEnabled())
{
log.debug("Query execution done");
}
if(isCachedRowSet)
{
CachedRowSet cachedRowSet;
try
{
Class clazz = (Class)Class.forName(CACHED_ROWSET_CLASS);
Constructor constructor = clazz.getConstructor();
cachedRowSet = constructor.newInstance();
}
catch (Exception e)
{
throw new JRException(e);
}
cachedRowSet.populate(queryResult);
closeStatement();
resultSet = cachedRowSet;
}
else
{
resultSet = queryResult;
}
dataSource = new JRResultSetDataSource(getJasperReportsContext(), resultSet);
dataSource.setTimeZone(fieldsTimeZone, fieldsTimeZoneOverride);
TimeZone reportTimeZone = (TimeZone) getParameterValue(JRParameter.REPORT_TIME_ZONE, true);
dataSource.setReportTimeZone(reportTimeZone);
}
catch (SQLTimeoutException e)
{
throw
new JRException(
EXCEPTION_MESSAGE_KEY_QUERY_STATEMENT_TIMEOUT_LIMIT_EXCEEDED,
new Object[]{dataset.getName()},
e);
}
catch (SQLException e)
{
throw
new JRException(
EXCEPTION_MESSAGE_KEY_QUERY_STATEMENT_EXECUTE_ERROR,
new Object[]{dataset.getName()},
e);
}
}
return dataSource;
}
protected void createStatement() throws JRException
{
String queryString = getQueryString();
if (log.isDebugEnabled())
{
log.debug("SQL query string: " + queryString);
}
if (connection != null && queryString != null && queryString.trim().length() > 0)
{
try
{
isProcedureCall = isProcedureCall(queryString);
CallableStatement callableStatement = null;
String type = getPropertiesUtil().getProperty(dataset, JRJdbcQueryExecuterFactory.PROPERTY_JDBC_RESULT_SET_TYPE);
String concurrency = getPropertiesUtil().getProperty(dataset, JRJdbcQueryExecuterFactory.PROPERTY_JDBC_CONCURRENCY);
String holdability = getPropertiesUtil().getProperty(dataset, JRJdbcQueryExecuterFactory.PROPERTY_JDBC_HOLDABILITY);
if (type == null && concurrency == null && holdability == null)
{
if (isProcedureCall)
{
statement = callableStatement = connection.prepareCall(queryString);
}
else
{
statement = connection.prepareStatement(queryString);
}
}
else
{
type = type == null ? TYPE_FORWARD_ONLY : type;
concurrency = concurrency == null ? CONCUR_READ_ONLY : concurrency;
if (holdability == null)
{
if (isProcedureCall)
{
statement = callableStatement =
connection.prepareCall(
queryString,
getResultSetType(type),
getConcurrency(concurrency)
);
}
else
{
statement =
connection.prepareStatement(
queryString,
getResultSetType(type),
getConcurrency(concurrency)
);
}
}
else
{
if (isProcedureCall)
{
statement = callableStatement =
connection.prepareCall(
queryString,
getResultSetType(type),
getConcurrency(concurrency),
getHoldability(holdability, connection)
);
}
else
{
statement =
connection.prepareStatement(
queryString,
getResultSetType(type),
getConcurrency(concurrency),
getHoldability(holdability, connection)
);
}
}
}
int fetchSize = getPropertiesUtil().getIntegerProperty(dataset,
JRJdbcQueryExecuterFactory.PROPERTY_JDBC_FETCH_SIZE,
0);
if (fetchSize != 0)
{
statement.setFetchSize(fetchSize);
}
int maxFieldSize = getPropertiesUtil().getIntegerProperty(dataset,
JRJdbcQueryExecuterFactory.PROPERTY_JDBC_MAX_FIELD_SIZE,
0);//FIXMENOW check the default of all zero default properties
if(maxFieldSize != 0)
{
statement.setMaxFieldSize(maxFieldSize);
}
Integer queryTimeoutValue = getPropertiesUtil().getIntegerProperty(dataset,
JRJdbcQueryExecuterFactory.PROPERTY_JDBC_QUERY_TIMEOUT);
if (queryTimeoutValue != null && queryTimeoutValue >= 0)
{
statement.setQueryTimeout(queryTimeoutValue);
}
Integer reportMaxCount = (Integer) getParameterValue(JRParameter.REPORT_MAX_COUNT);
if (reportMaxCount != null)
{
statement.setMaxRows(reportMaxCount);
}
if (isProcedureCall)
{
initProcedureCall(callableStatement);
}
visitQueryParameters(new QueryParameterVisitor()
{
int paramIdx = 1;
@Override
public void visit(QueryParameter queryParameter)
{
try
{
if (queryParameter.isMulti())
{
paramIdx += setStatementMultiParameters(paramIdx, queryParameter.getName(), queryParameter.isIgnoreNulls());
}
else
{
setStatementParameter(paramIdx, queryParameter.getName());
++paramIdx;
}
}
catch (SQLException e)
{
throw new VisitExceptionWrapper(e);
}
}
@Override
public void visit(ValuedQueryParameter valuedQueryParameter)
{
// assuming a single value for now
Class type = valuedQueryParameter.getType();
Object value = valuedQueryParameter.getValue();
if (type == null)
{
type = value == null ? Object.class : value.getClass();
}
if (log.isDebugEnabled())
{
log.debug("Parameter #" + paramIdx + " (of type " + type.getName() + "): " + value);
}
try
{
setStatementParameter(paramIdx, type, value, dataset);// using only dataset properties for now
++paramIdx;
}
catch (SQLException e)
{
throw new VisitExceptionWrapper(e);
}
}
});
}
catch (VisitExceptionWrapper e)
{
throw
new JRException(
EXCEPTION_MESSAGE_KEY_QUERY_STATEMENT_PREPARE_ERROR,
new Object[]{queryString},
e.getCause());
}
catch (SQLException e)
{
throw
new JRException(
EXCEPTION_MESSAGE_KEY_QUERY_STATEMENT_PREPARE_ERROR,
new Object[]{queryString},
e);
}
}
}
protected boolean isProcedureCall(String queryString) throws SQLException
{
if (!OracleProcedureCallHandler.isOracle(connection))
{
//only supporting oracle for now
return false;
}
Matcher matcher = PROCEDURE_CALL_PATTERN.matcher(queryString);
return matcher.find() && matcher.start() == 0;
}
protected void initProcedureCall(CallableStatement callableStatement) throws SQLException
{
procedureCallHandler = new OracleProcedureCallHandler();
procedureCallHandler.init(callableStatement);
}
public ResultSet getResultSet() {
return resultSet;
}
protected void setStatementParameter(int parameterIndex, String parameterName) throws SQLException
{
JRValueParameter parameter = getValueParameter(parameterName);
Class clazz = parameter.getValueClass();
Object parameterValue = parameter.getValue();
if (log.isDebugEnabled())
{
log.debug("Parameter #" + parameterIndex + " (" + parameterName + " of type " + clazz.getName() + "): " + parameterValue);
}
setStatementParameter(parameterIndex, clazz, parameterValue, parameter);
}
protected int setStatementMultiParameters(int parameterIndex, String parameterName, boolean ignoreNulls) throws SQLException
{
JRValueParameter parameter = getValueParameter(parameterName);
Object paramValue = parameter.getValue();
int count;
int index = 0;
if (paramValue.getClass().isArray())
{
int arrayCount = Array.getLength(paramValue);
for (count = 0; count < arrayCount; ++count)
{
Object value = Array.get(paramValue, count);
if(!ignoreNulls || value != null)
{
setStatementMultiParameter(parameterIndex + index, parameterName, count, value, parameter);
++index;
}
}
}
else if (paramValue instanceof Collection)
{
Collection values = (Collection) paramValue;
count = 0;
for (Iterator it = values.iterator(); it.hasNext(); ++count)
{
Object value = it.next();
if(!ignoreNulls || value != null)
{
setStatementMultiParameter(parameterIndex + index, parameterName, count, value, parameter);
++index;
}
}
}
else
{
throw
new JRRuntimeException(
EXCEPTION_MESSAGE_KEY_UNEXPECTED_MULTI_PARAMETER_TYPE,
(Object[])null);
}
return index;
}
protected void setStatementMultiParameter(int parameterIndex, String parameterName, int valueIndex, Object value,
JRPropertiesHolder properties) throws SQLException
{
if (value == null)
{
throw
new JRRuntimeException(
EXCEPTION_MESSAGE_KEY_MULTI_PARAMETERS_CANNOT_CONTAIN_NULL_VALUES,
(Object[])null);
}
Class type = value.getClass();
if (log.isDebugEnabled())
{
log.debug("Parameter #" + parameterIndex +
" (" + parameterName + "[" + valueIndex + "] of type " + type.getName() + "): " + value);
}
setStatementParameter(parameterIndex, type, value, properties);
}
protected void setStatementParameter(int parameterIndex, Class parameterType, Object parameterValue,
JRPropertiesHolder properties) throws SQLException
{
if (java.lang.Boolean.class.isAssignableFrom(parameterType))
{
if (parameterValue == null)
{
statement.setNull(parameterIndex, Types.BIT);
}
else
{
statement.setBoolean(parameterIndex, (Boolean)parameterValue);
}
}
else if (java.lang.Byte.class.isAssignableFrom(parameterType))
{
if (parameterValue == null)
{
statement.setNull(parameterIndex, Types.TINYINT);
}
else
{
statement.setByte(parameterIndex, (Byte)parameterValue);
}
}
else if (java.lang.Double.class.isAssignableFrom(parameterType))
{
if (parameterValue == null)
{
statement.setNull(parameterIndex, Types.DOUBLE);
}
else
{
statement.setDouble(parameterIndex, (Double)parameterValue);
}
}
else if (java.lang.Float.class.isAssignableFrom(parameterType))
{
if (parameterValue == null)
{
statement.setNull(parameterIndex, Types.FLOAT);
}
else
{
statement.setFloat(parameterIndex, (Float)parameterValue);
}
}
else if (java.lang.Integer.class.isAssignableFrom(parameterType))
{
if (parameterValue == null)
{
statement.setNull(parameterIndex, Types.INTEGER);
}
else
{
statement.setInt(parameterIndex, (Integer)parameterValue);
}
}
else if (java.lang.Long.class.isAssignableFrom(parameterType))
{
if (parameterValue == null)
{
statement.setNull(parameterIndex, Types.BIGINT);
}
else
{
statement.setLong(parameterIndex, (Long)parameterValue);
}
}
else if (java.lang.Short.class.isAssignableFrom(parameterType))
{
if (parameterValue == null)
{
statement.setNull(parameterIndex, Types.SMALLINT);
}
else
{
statement.setShort(parameterIndex, (Short)parameterValue);
}
}
else if (java.math.BigDecimal.class.isAssignableFrom(parameterType))
{
if (parameterValue == null)
{
statement.setNull(parameterIndex, Types.DECIMAL);
}
else
{
statement.setBigDecimal(parameterIndex, (BigDecimal)parameterValue);
}
}
else if (java.lang.String.class.isAssignableFrom(parameterType))
{
if (parameterValue == null)
{
statement.setNull(parameterIndex, Types.VARCHAR);
}
else
{
statement.setString(parameterIndex, parameterValue.toString());
}
}
else if (java.sql.Timestamp.class.isAssignableFrom(parameterType))
{
setTimestamp(parameterIndex, parameterValue, properties);
}
else if (java.sql.Time.class.isAssignableFrom(parameterType))
{
setTime(parameterIndex, parameterValue, properties);
}
else if (java.util.Date.class.isAssignableFrom(parameterType))
{
setDate(parameterIndex, parameterValue, properties);
}
else
{
if (isProcedureCall)
{
boolean handled = procedureCallHandler.setParameterValue(parameterIndex, parameterType, parameterValue);
if (handled)
{
return;
}
}
if (parameterValue == null)
{
statement.setNull(parameterIndex, Types.JAVA_OBJECT);
}
else
{
statement.setObject(parameterIndex, parameterValue);
}
}
}
protected void setTimestamp(int parameterIndex, Object parameterValue, JRPropertiesHolder properties)
throws SQLException
{
if (parameterValue == null)
{
statement.setNull(parameterIndex, Types.TIMESTAMP);
}
else
{
Calendar cal = getParameterCalendar(properties);
if (log.isDebugEnabled())
{
log.debug("setting timestamp parameter " + parameterIndex
+ " as " + parameterValue
+ " (" + ((java.sql.Timestamp) parameterValue).getTime() + ")"
+ " with calendar " + cal);
}
if (cal == null)
{
statement.setTimestamp(parameterIndex, (java.sql.Timestamp) parameterValue);
}
else
{
statement.setTimestamp(parameterIndex, (java.sql.Timestamp) parameterValue, cal);
}
}
}
protected void setTime(int parameterIndex, Object parameterValue, JRPropertiesHolder properties)
throws SQLException
{
if (parameterValue == null)
{
statement.setNull(parameterIndex, Types.TIME);
}
else
{
Calendar cal = getParameterCalendar(properties);
if (log.isDebugEnabled())
{
log.debug("setting time parameter " + parameterIndex
+ " as " + parameterValue
+ " (" + ((java.sql.Time) parameterValue).getTime() + ")"
+ " with calendar " + cal);
}
if (cal == null)
{
statement.setTime(parameterIndex, (java.sql.Time) parameterValue);
}
else
{
statement.setTime(parameterIndex, (java.sql.Time) parameterValue, cal);
}
}
}
protected void setDate(int parameterIndex, Object parameterValue, JRPropertiesHolder properties)
throws SQLException
{
if (parameterValue == null)
{
statement.setNull(parameterIndex, Types.DATE);
}
else
{
Calendar cal = getParameterCalendar(properties);
if (log.isDebugEnabled())
{
log.debug("setting date parameter " + parameterIndex
+ " as " + parameterValue
+ " (" + ((java.util.Date) parameterValue).getTime() + ")"
+ " with calendar " + cal);
}
if (cal == null)
{
statement.setDate(parameterIndex, new java.sql.Date(((java.util.Date)parameterValue).getTime()));
}
else
{
statement.setDate(parameterIndex, new java.sql.Date(((java.util.Date)parameterValue).getTime()), cal);
}
}
}
protected Calendar getParameterCalendar(JRPropertiesHolder properties)
{
TimeZone tz;
if (parametersTimeZoneOverride)
{
// if we have a parameter, use it
tz = parametersTimeZone;
}
else
{
if (properties.hasProperties() && properties.getPropertiesMap().containsProperty(
JRJdbcQueryExecuterFactory.PROPERTY_TIME_ZONE))
{
// read the parameter level property
String timezoneId = getPropertiesUtil().getProperty(properties,
JRJdbcQueryExecuterFactory.PROPERTY_TIME_ZONE);
if (log.isDebugEnabled())
{
log.debug("parameter timezone property " + timezoneId);
}
tz = resolveTimeZone(timezoneId);
}
else
{
// dataset/default property
tz = parametersTimeZone;
}
}
// using default JVM locale for the calendar
Calendar cal = tz == null ? null : Calendar.getInstance(tz);
return cal;
}
/* (non-Javadoc)
* @see net.sf.jasperreports.engine.util.JRQueryExecuter#close()
*/
@Override
public synchronized void close()
{
if (resultSet != null)
{
try
{
resultSet.close();
}
catch (SQLException e)
{
log.error("Error while closing result set.", e);
}
finally
{
resultSet = null;
}
}
if (statement != null)
{
closeStatement();
}
}
protected void closeStatement()
{
try
{
statement.close();
}
catch (SQLException e)
{
log.error("Error while closing statement.", e);
}
finally
{
statement = null;
}
}
/* (non-Javadoc)
* @see net.sf.jasperreports.engine.util.JRQueryExecuter#cancelQuery()
*/
@Override
public synchronized boolean cancelQuery() throws JRException
{
if (statement != null)
{
try
{
statement.cancel();
return true;
}
catch (Exception e)
{
throw
new JRException(
EXCEPTION_MESSAGE_KEY_QUERY_STATEMENT_CANCEL_ERROR,
null,
e);
}
}
return false;
}
protected static int getResultSetType(String type)
{
if (TYPE_FORWARD_ONLY.equals(type))
{
return ResultSet.TYPE_FORWARD_ONLY;
}
else if (TYPE_SCROLL_INSENSITIVE.equals(type))
{
return ResultSet.TYPE_SCROLL_INSENSITIVE;
}
else if (TYPE_SCROLL_SENSITIVE.equals(type))
{
return ResultSet.TYPE_SCROLL_SENSITIVE;
}
return ResultSet.TYPE_FORWARD_ONLY;
}
protected static int getConcurrency(String concurrency)
{
if (CONCUR_READ_ONLY.equals(concurrency))
{
return ResultSet.CONCUR_READ_ONLY;
}
else if (CONCUR_UPDATABLE.equals(concurrency))
{
return ResultSet.CONCUR_UPDATABLE;
}
return ResultSet.CONCUR_READ_ONLY;
}
protected static int getHoldability(String holdability, Connection connection) throws SQLException
{
if (HOLD_CURSORS_OVER_COMMIT.equals(holdability))
{
return ResultSet.HOLD_CURSORS_OVER_COMMIT;
}
else if (CLOSE_CURSORS_AT_COMMIT.equals(holdability))
{
return ResultSet.CLOSE_CURSORS_AT_COMMIT;
}
return connection.getHoldability();
}
}
