RE: How do you map a Java boolean property to a VARCHAR(1) that contains 'Y' or 'N'?

Rick Wed, 28 Jun 2006 16:28:49 -0700

I found the answer (just by trial and error no documentation per se).

Can you tell me if there is a easier/better way?

I created a custom type handler and used it as follows:

<result property="primaryContact" column="primary_contact"

typeHandler="qcom.cas.commons.ibatis.typehandler.StringBooleanTypeHandler" />

</resultMap>

package qcom.cas.commons.ibatis.typehandler;

import java.sql.CallableStatement;

import java.sql.PreparedStatement;

import java.sql.ResultSet;

import java.sql.SQLException;

import com.ibatis.sqlmap.engine.type.TypeHandler;

public class StringBooleanTypeHandler implements TypeHandler {

public void setParameter(PreparedStatement ps, int position, Object value,

String jdbcType) throws SQLException {

Boolean bValue = (Boolean) value;

ps.setString(position, bValue.booleanValue() ? "Y" : "N");

}

public Object getResult(ResultSet rs, String name) throws SQLException {

return valueOf(rs.getString(name));

}

public Object getResult(ResultSet rs, int position) throws SQLException {

return valueOf(rs.getString(position));

}

public Object getResult(CallableStatement cs, int position)

throws SQLException {

return valueOf(cs.getString(position));

}

public Object valueOf(String value) {

if (value.equals("Y")) {

return Boolean.TRUE;

} else {

return Boolean.FALSE;

}

public boolean equals(Object value1, String value2) {

return valueOf(value2).equals(value1);

}

Can you tell me if there is a easier/better way?

From: Rick [mailto:[EMAIL PROTECTED]
Sent: Wednesday, June 28, 2006 4:07 PM
To: [email protected]
Subject: How do you map a Java boolean property to a VARCHAR(1) that contains 'Y' or 'N'?

I have a SQL map as follows:

</resultMap>

The class Contact has a primaryContact field is boolean

The result set is from a column that is equal to ‘Y’ or ‘N’ in the database.

Is there a way to map a boolean property (primitive) to a VARCHAR(1) NOT NULL column (that has either a ‘Y’ or a ‘N’)?

This is a legacy database and there is no way I can change the table. I could change the query.

BTW I am new to iBatis, and I got it talking to a legacy db. I also setup relationships fairly easily.

I did notice the typeHandler attribute of resultMap but this is not documented in the dtd or user documents.

RE: How do you map a Java boolean property to a VARCHAR(1) that contains 'Y' or 'N'?

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