/*
* GeoTools - The Open Source Java GIS Toolkit
* http://geotools.org
*
* (C) 2002-2008, Open Source Geospatial Foundation (OSGeo)
*
* This library 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;
* version 2.1 of the License.
*
* This library 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.
*/
package org.geotools.data.geometryless;
import java.util.logging.Logger;
import org.geotools.data.jdbc.FilterToSQL;
import org.geotools.data.jdbc.GeoAPISQLBuilder;
import org.geotools.data.jdbc.fidmapper.FIDMapper;
import org.opengis.feature.type.AttributeDescriptor;
import org.opengis.feature.type.GeometryDescriptor;
import org.opengis.feature.type.Name;
/**
* A Geometryless-specific instance of DefaultSQLBuilder, which supports geometries created form standard data types
* @author Rob Atkinson rob@socialchange.net.au
* @source $URL$
*/
public class GeometrylessSQLBuilder extends GeoAPISQLBuilder {
/** The logger for the mysql module. */
private static final Logger LOGGER = org.geotools.util.logging.Logging.getLogger("org.geotools.data.geometryless");
public GeometrylessSQLBuilder(FilterToSQL encoder) {
super(encoder, null,null);
}
/**
* Produces the select information required.
*
* <p>
* The featureType, if known, is always requested.
* </p>
*
* <p>
* sql: <code>featureID (,attributeColumn)</code>
* </p>
*
* <p>
* We may need to provide AttributeReaders with a hook so they can request
* a wrapper function.
* </p>
*
* @param sql
* @param fidColumnName
* @param attributes
*/
public void sqlColumns(StringBuffer sql, FIDMapper mapper, AttributeDescriptor[] attributes) {
for (int i = 0; i < mapper.getColumnCount(); i++) {
LOGGER.finest(mapper.getColumnName(i));
sql.append(mapper.getColumnName(i));
if (attributes.length > 0 || i < (mapper.getColumnCount() - 1)) {
sql.append(", ");
}
}
for (int i = 0; i < attributes.length; i++) {
Name colName = attributes[i].getName();
LOGGER.finest(attributes[i].getName() + " isGeom: "
+ (attributes[i] instanceof GeometryDescriptor) );
if (attributes[i] instanceof GeometryDescriptor) {
sql.append("AsText(" + attributes[i].getName() + ") AS " + attributes[i].getName());
} else {
sql.append(colName.getLocalPart());
}
if (i < (attributes.length - 1)) {
sql.append(", ");
}
}
}
}