/**
* Copyright (c) 2013, impossibl.com
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of impossibl.com nor the names of its contributors may
* be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
package com.impossibl.postgres.jdbc;
import com.impossibl.postgres.types.Type;
import static com.impossibl.postgres.jdbc.Exceptions.PARAMETER_INDEX_OUT_OF_BOUNDS;
import static com.impossibl.postgres.jdbc.Exceptions.UNWRAP_ERROR;
import java.sql.ParameterMetaData;
import java.sql.SQLException;
import java.util.List;
import java.util.Map;
public class PGParameterMetaData implements ParameterMetaData {
List<Type> parameterTypes;
Map<String, Class<?>> typeMap;
public PGParameterMetaData(List<Type> parameterTypes, Map<String, Class<?>> typeMap) {
super();
this.parameterTypes = parameterTypes;
this.typeMap = typeMap;
}
void checkParamIndex(int paramIndex) throws SQLException {
if (paramIndex < 1 || paramIndex > parameterTypes.size())
throw PARAMETER_INDEX_OUT_OF_BOUNDS;
}
Type getType(int paramIndex) throws SQLException {
checkParamIndex(paramIndex);
return parameterTypes.get(paramIndex - 1);
}
@Override
public <T> T unwrap(Class<T> iface) throws SQLException {
if (!iface.isAssignableFrom(getClass())) {
throw UNWRAP_ERROR;
}
return iface.cast(this);
}
@Override
public boolean isWrapperFor(Class<?> iface) throws SQLException {
return iface.isAssignableFrom(getClass());
}
@Override
public int getParameterCount() throws SQLException {
return parameterTypes.size();
}
@Override
public int isNullable(int param) throws SQLException {
Type paramType = getType(param);
if (SQLTypeMetaData.isNullable(paramType) == parameterNoNulls) {
return parameterNoNulls;
}
return ParameterMetaData.parameterNullable;
}
@Override
public boolean isSigned(int param) throws SQLException {
Type type = getType(param);
return SQLTypeMetaData.isSigned(type);
}
@Override
public int getPrecision(int param) throws SQLException {
Type paramType = getType(param);
return SQLTypeMetaData.getPrecision(paramType, 0, 0);
}
@Override
public int getScale(int param) throws SQLException {
Type paramType = getType(param);
return SQLTypeMetaData.getScale(paramType, 0, 0);
}
@Override
public int getParameterType(int param) throws SQLException {
Type paramType = getType(param);
return SQLTypeMetaData.getSQLType(paramType);
}
@Override
public String getParameterTypeName(int param) throws SQLException {
Type paramType = getType(param);
return paramType.getName();
}
@Override
public String getParameterClassName(int param) throws SQLException {
Type paramType = getType(param);
return paramType.getJavaType(paramType.getPreferredFormat(), typeMap).getName();
}
@Override
public int getParameterMode(int param) throws SQLException {
return ParameterMetaData.parameterModeIn;
}
}