/*

  * Copyright 2007 The Kuali Foundation

  *

  * Licensed under the Educational Community 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.opensource.org/licenses/ecl2.php

  *

  * 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.

  */

 /* Created on Sep 13, 2005 */

 package org.apache.ojb.broker.platforms;

 /* Copyright 2002-2004 The Apache Software Foundation

  *

  * 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.

  */

 import java.io.ByteArrayInputStream;

 import java.io.InputStreamReader;

 import java.io.Reader;

 import java.io.StringReader;

 import java.sql.PreparedStatement;

 import java.sql.SQLException;

 import java.sql.Types;

 import org.apache.ojb.broker.query.LikeCriteria;

 /**

  * DatabasePlatform implementation for the Mckoi database.

  * 

  * @author Kuali Rice Team (rice.collab@kuali.org)

  * @see http://www.mckoi.com/database

  */

 public class PlatformMckoiImpl extends PlatformDefaultImpl

 {

     /* (non-Javadoc)

      * @see DatabasePlatform#setObjectForStatement(PreparedStatement, int, Object, int)

      */

     public void setObjectForStatement(PreparedStatement statement, int index, Object value, int sqlType) throws SQLException

     {

         switch (sqlType)

         {

             case Types.BLOB :

             case Types.LONGVARBINARY :

             case Types.VARBINARY :

                 if (value instanceof byte[])

                 {

                     byte[]               buf         = (byte[])value;

                     ByteArrayInputStream inputStream = new ByteArrayInputStream(buf);

                     statement.setBinaryStream(index, inputStream, buf.length);

                     break;

                 }

             case Types.CLOB :

                 Reader reader = null;

                 int    length = 0;

                 if (value instanceof String)

                 {

                     reader = new StringReader((String)value);

                     length = (((String)value)).length();

                 }

                 else if (value instanceof char[])

                 {

                     String string = new String((char[])value);

                     reader = new StringReader(string);

                     length = string.length();

                 }

                 else if (value instanceof byte[])

                 {

                     ByteArrayInputStream inputStream = new ByteArrayInputStream((byte[])value);

                     reader = new InputStreamReader(inputStream);

                 }

                 statement.setCharacterStream(index, reader, length);

                 break;

             default :

                 super.setObjectForStatement(statement, index, value, sqlType);

         }

     }

     /* (non-Javadoc)

      * @see org.apache.ojb.broker.platforms.Platform#createSequenceQuery(String)

      */

     public String createSequenceQuery(String sequenceName)

     {

         return "create sequence " + sequenceName;

     }

     /* (non-Javadoc)

      * @see org.apache.ojb.broker.platforms.Platform#nextSequenceQuery(String)

      */

     public String nextSequenceQuery(String sequenceName)

     {

         return "select nextval('" + sequenceName + "')";

     }

     /* (non-Javadoc)

      * @see org.apache.ojb.broker.platforms.Platform#dropSequenceQuery(String)

      */

     public String dropSequenceQuery(String sequenceName)

     {

         return "drop sequence " + sequenceName;

     }

     /* (non-Javadoc)

      * @see org.apache.ojb.broker.platforms.Platform#getJoinSyntaxType()

      */

     public byte getJoinSyntaxType()

     {

         return SQL92_NOPAREN_JOIN_SYNTAX;

     }

     /* (non-Javadoc)

      * @see org.apache.ojb.broker.platforms.Platform#supportsPaging()

      */

     public boolean supportsPaging()

     {

         // [tomdz] there is no explicit paging support a la LIMIT in Mckoi (yet ?)

         return false;

     }

     /* (non-Javadoc)

      * @see org.apache.ojb.broker.platforms.Platform#concatenate(java.lang.String[])

      */

     public String concatenate(String[] columns)

     {

         if (columns.length == 1)

         {

             return columns[0];

         }

         StringBuffer buf = new StringBuffer();

         buf.append("concat(");

         for (int idx = 0; idx < columns.length; idx++)

         {

             if (idx > 0)

             {

                 buf.append(",");

             }

             buf.append(columns[idx]);

         }

         buf.append(")");

         return buf.toString();

     }    

     /* (non-Javadoc)

      * @see org.apache.ojb.broker.platforms.Platform#getEscapeClause(org.apache.ojb.broker.query.LikeCriteria)

      */

     public String getEscapeClause(LikeCriteria criteria)

     {

         // [tomdz] Mckoi does not support escape characters other than \

         // TODO    Shold we throw some kind of exception here if the escape character is different ?

         return "";

     }    

 }