com.manydesigns.portofino.database.StringBooleanType.java Source code

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Here is the source code for com.manydesigns.portofino.database.StringBooleanType.java

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/*
 * Copyright (C) 2005-2013 ManyDesigns srl.  All rights reserved.
 * http://www.manydesigns.com/
 *
 * This 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.
 *
 * This software 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 this software; if not, write to the Free
 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
 */

package com.manydesigns.portofino.database;

import org.apache.commons.lang.ObjectUtils;
import org.hibernate.HibernateException;
import org.hibernate.usertype.EnhancedUserType;
import org.hibernate.usertype.ParameterizedType;

import java.io.Serializable;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Types;
import java.util.Properties;

/**
 * @author Paolo Predonzani     - paolo.predonzani@manydesigns.com
 * @author Angelo Lupo          - angelo.lupo@manydesigns.com
 * @author Giampiero Granatella - giampiero.granatella@manydesigns.com
 * @author Alessio Stalla       - alessio.stalla@manydesigns.com
 */
public class StringBooleanType implements EnhancedUserType, ParameterizedType {
    public static final String copyright = "Copyright (c) 2005-2013, ManyDesigns srl";

    private int sqlType = Types.CHAR;

    public static final String NULL = new StringBuilder("null").toString();

    private String trueString = "T";
    private String falseString = "F";

    public int[] sqlTypes() {
        return new int[] { sqlType };
    }

    public Class returnedClass() {
        return Boolean.class;
    }

    public boolean equals(Object x, Object y) throws HibernateException {
        return ObjectUtils.equals(x, y);
    }

    public int hashCode(Object x) throws HibernateException {
        return ObjectUtils.hashCode(x);
    }

    public Object nullSafeGet(ResultSet resultSet, String[] names,
            /* hb4 SessionImplementor sessionImplementor,*/ Object owner) throws HibernateException, SQLException {
        String value = resultSet.getString(names[0]);
        return parseBoolean(value);
    }

    protected Object parseBoolean(String value) {
        if (value != null) {
            if (value.trim().equalsIgnoreCase(trueString)) {
                return Boolean.TRUE;
            } else if (value.trim().equalsIgnoreCase(falseString)) {
                return Boolean.FALSE;
            } else {
                throw new HibernateException("Invalid boolean value: " + value + "; possible values are "
                        + trueString + ", " + falseString + ", null");
            }
        } else {
            if (trueString == null) {
                return true;
            } else if (falseString == null) {
                return false;
            } else {
                return null;
            }
        }
    }

    public void nullSafeSet(PreparedStatement statement, Object value,
            int index/*hb4, SessionImplementor sessionImplementor*/) throws HibernateException, SQLException {
        if (value == null) {
            if (trueString != null && falseString != null) {
                statement.setString(index, null);
            } else {
                throw new HibernateException("Null is not supported as a boolean value for this type");
            }
        } else {
            statement.setString(index, (Boolean) value ? trueString : falseString);
        }
    }

    public Object deepCopy(Object value) throws HibernateException {
        return value;
    }

    public boolean isMutable() {
        return false;
    }

    public Serializable disassemble(Object value) throws HibernateException {
        return (Serializable) value;
    }

    public Object assemble(Serializable cached, Object owner) throws HibernateException {
        return cached;
    }

    public Object replace(Object original, Object target, Object owner) throws HibernateException {
        return original;
    }

    public String getTrueString() {
        return trueString;
    }

    public String getFalseString() {
        return falseString;
    }

    public void setParameterValues(Properties parameters) {
        //Strings are compared with == and != on purpose
        String nullValue = new String();
        String newString = parameters.getProperty("true", nullValue);
        if (newString != nullValue) {
            trueString = newString != NULL ? newString : null;
        }
        newString = parameters.getProperty("false", nullValue);
        if (newString != nullValue) {
            falseString = newString != NULL ? newString : null;
        }
        if ((trueString == falseString) || ((trueString != null) && trueString.equals(falseString))) {
            throw new IllegalArgumentException("trueString and falseString must be distinct");
        }
        String sqlTypeCode = parameters.getProperty("sqlType");
        if (sqlTypeCode != null) {
            sqlType = Integer.parseInt(sqlTypeCode);
        }
    }

    public String objectToSQLString(Object value) {
        if ((Boolean) value) {
            return '\'' + trueString + '\'';
        } else {
            return '\'' + falseString + '\'';
        }
    }

    public String toXMLString(Object value) {
        if ((Boolean) value) {
            return trueString;
        } else {
            return falseString;
        }
    }

    public Object fromXMLString(String xmlValue) {
        return parseBoolean(xmlValue);
    }
}