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/**
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* Copyright (C) 2007 EDIT
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* European Distributed Institute of Taxonomy
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* http://www.e-taxonomy.eu
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*
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* The contents of this file are subject to the Mozilla Public License Version 1.1
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* See LICENSE.TXT at the top of this package for the full license terms.
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*/
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package eu.etaxonomy.cdm.hibernate;
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import java.io.Serializable;
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import java.net.URI;
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import java.net.URISyntaxException;
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import java.sql.PreparedStatement;
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import java.sql.ResultSet;
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import java.sql.SQLException;
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import java.sql.Types;
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import org.hibernate.TypeMismatchException;
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import org.hibernate.usertype.UserType;
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/**
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* This class maps java.net.URI to varchar(255)
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* @author a.mueller
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*
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*/
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public class URIUserType implements UserType, Serializable {
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private static final long serialVersionUID = -5825017496962569105L;
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/**
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* SQL type for this usertype.
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*/
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private static final int[] SQL_TYPES = {Types.VARCHAR};
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/**
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* @return returns SQL type for the column to which the UserType is mapped
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*/
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public int[] sqlTypes() {
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return SQL_TYPES;
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}
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/**
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* @return returns the class of the instance being managed by the UserType
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*/
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public Class returnedClass() {
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return URI.class;
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}
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/**
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* @param x first object to compare
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* @param y second object to compare
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* @return comparison result
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* @throws HibernateException
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*/
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public boolean equals(Object x, Object y) {
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if (x == y) {
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return true;
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} else if (x == null || y == null) {
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return false;
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} else {
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return x.equals(y);
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}
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}
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/**
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* @param resultSet resultset object
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* @param names names of the columns in the resultset
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* @param owner parent object on which the value is to be set
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* @return returns URI object
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* @throws SQLException throws exception when error occurs in accessing the resultSet
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*/
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public Object nullSafeGet(ResultSet resultSet, String[] names, Object owner)
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throws SQLException {
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String strURI = resultSet.getString(names[0]);
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URI uri = null;
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if (null != strURI) {
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try {
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uri = new URI(strURI);
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} catch (URISyntaxException e) {
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throw new TypeMismatchException(e);
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}
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}
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return uri;
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}
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/**
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* @param statement prepared statement object
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* @param value value being set in the statement
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* @param index location of the value in the statement
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* @throws SQLException throws exception when error occurs in accessing the statement
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*/
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public void nullSafeSet(PreparedStatement statement, Object value, int index)
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throws SQLException {
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if (value == null) {
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statement.setString(index, null);
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} else {
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URI uri = (URI) value;
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statement.setString(index, uri.toString());
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}
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}
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/**
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* @param value value being copied
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* @return copied value
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*/
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public Object deepCopy(Object value) {
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if (value == null) {
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return null;
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}
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try {
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return new URI(((URI) value).toString());
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} catch (URISyntaxException e) {
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throw new TypeMismatchException(e);
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}
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}
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/**
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* @return returns false
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*/
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public boolean isMutable() {
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return false;
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}
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/**
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* @param arg0 object to be assembled
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* @param arg1 object to be assembled
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* @return returns assembled object
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*/
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public Object assemble(Serializable arg0, Object arg1) {
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return (Serializable) deepCopy(arg0);
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}
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/**
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* @param arg0 object to be disassembled
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* @return returns disassembled object
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*/
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public Serializable disassemble(Object arg0) {
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return (Serializable) deepCopy(arg0);
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}
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/**
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* @param arg0 object whose hashcode is to be determined
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* @return returns 0
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*/
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public int hashCode(Object arg0) {
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return 0;
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}
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/**
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* @param arg0 argument 0
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* @param arg1 argument 1
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* @param arg2 argument 2
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* @return returns arg0
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*/
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public Object replace(Object arg0, Object arg1, Object arg2) {
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return arg0;
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}
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}
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