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/*
* Copyright 2002-2005 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springframework.jdbc.core;
/**
* Common base class for ResultSet-supporting SqlParameters like
* SqlOutParameter and SqlReturnResultSet.
*
* @author Juergen Hoeller
* @since 1.0.2
* @see SqlOutParameter
* @see SqlReturnResultSet
*/
public class ResultSetSupportingSqlParameter extends SqlParameter {
private ResultSetExtractor resultSetExtractor;
private RowCallbackHandler rowCallbackHandler;
private RowMapper rowMapper;
private int rowsExpected = 0;
/**
* Create a new ResultSetSupportingSqlParameter.
* @param name name of the parameter, as used in input and output maps
* @param sqlType SQL type of the parameter according to java.sql.Types
*/
public ResultSetSupportingSqlParameter(String name, int sqlType) {
super(name, sqlType);
}
/**
* Create a new ResultSetSupportingSqlParameter.
* @param name name of the parameter, as used in input and output maps
* @param sqlType SQL type of the parameter according to java.sql.Types
* @param typeName the type name of the parameter (optional)
*/
public ResultSetSupportingSqlParameter(String name, int sqlType, String typeName) {
super(name, sqlType, typeName);
}
/**
* Create a new ResultSetSupportingSqlParameter.
* @param name name of the parameter, as used in input and output maps
* @param sqlType SQL type of the parameter according to java.sql.Types
* @param rse ResultSetExtractor to use for parsing the ResultSet
*/
public ResultSetSupportingSqlParameter(String name, int sqlType, ResultSetExtractor rse) {
super(name, sqlType);
this.resultSetExtractor = rse;
}
/**
* Create a new ResultSetSupportingSqlParameter.
* @param name name of the parameter, as used in input and output maps
* @param sqlType SQL type of the parameter according to java.sql.Types
* @param rch RowCallbackHandler to use for parsing the ResultSet
*/
public ResultSetSupportingSqlParameter(String name, int sqlType, RowCallbackHandler rch) {
super(name, sqlType);
this.rowCallbackHandler = rch;
}
/**
* Create a new ResultSetSupportingSqlParameter.
* @param name name of the parameter, as used in input and output maps
* @param sqlType SQL type of the parameter according to java.sql.Types
* @param rm RowMapper to use for parsing the ResultSet
*/
public ResultSetSupportingSqlParameter(String name, int sqlType, RowMapper rm) {
super(name, sqlType);
this.rowMapper = rm;
}
/**
* Create a new ResultSetSupportingSqlParameter.
* @param name name of the parameter, as used in input and output maps
* @param sqlType SQL type of the parameter according to java.sql.Types
* @param rm RowMapper to use for parsing the ResultSet
* @param rowsExpected number of expected rows
*/
public ResultSetSupportingSqlParameter(String name, int sqlType, RowMapper rm, int rowsExpected) {
super(name, sqlType);
this.rowMapper = rm;
this.rowsExpected = rowsExpected;
}
/**
* Does this parameter support a ResultSet, i.e. does it hold a
* ResultSetExtractor, RowCallbackHandler or RowMapper?
*/
public boolean isResultSetSupported() {
return (this.resultSetExtractor != null || this.rowCallbackHandler != null || this.rowMapper != null);
}
/**
* Does this parameter support a RowCallbackHandler,
* i.e. does it hold a RowCallbackHandler or RowMapper?
*/
public boolean isRowCallbackHandlerSupported() {
return (this.rowCallbackHandler != null || this.rowMapper != null);
}
/**
* Return the ResultSetExtractor held by this parameter, if any.
*/
public ResultSetExtractor getResultSetExtractor() {
return resultSetExtractor;
}
/**
* Return a new instance of the implementation of a RowCallbackHandler,
* usable for returned ResultSets. This implementation invokes a given
* RowMapper via the RowMapperResultReader adapter, of returns a given
* RowCallbackHandler directly.
* @see RowMapperResultReader
*/
public RowCallbackHandler getRowCallbackHandler() {
if (this.rowMapper != null) {
return new RowMapperResultReader(this.rowMapper, this.rowsExpected);
}
else {
return this.rowCallbackHandler;
}
}
}
