package com.j256.ormlite.field.types;
import java.lang.reflect.Field;
import java.sql.SQLException;
import java.util.UUID;
import com.j256.ormlite.field.FieldType;
import com.j256.ormlite.field.SqlType;
import com.j256.ormlite.misc.SqlExceptionUtil;
import com.j256.ormlite.support.DatabaseResults;
/**
* Type that persists a {@link UUID} object.
*
* @author graywatson
*/
public class UuidType extends BaseDataType {
public static int DEFAULT_WIDTH = 48;
private static final UuidType singleTon = new UuidType();
public static UuidType getSingleton() {
return singleTon;
}
private UuidType() {
super(SqlType.STRING, new Class<?>[] { UUID.class });
}
@Override
public Object parseDefaultString(FieldType fieldType, String defaultStr) throws SQLException {
try {
return java.util.UUID.fromString(defaultStr);
} catch (IllegalArgumentException e) {
throw SqlExceptionUtil.create("Problems with field " + fieldType + " parsing default UUID-string '"
+ defaultStr + "'", e);
}
}
@Override
public Object resultToJava(FieldType fieldType, DatabaseResults results, int columnPos) throws SQLException {
String uuidStr = results.getString(columnPos);
if (uuidStr == null) {
return null;
}
try {
return java.util.UUID.fromString(uuidStr);
} catch (IllegalArgumentException e) {
throw SqlExceptionUtil.create("Problems with column " + columnPos + " parsing UUID-string '" + uuidStr
+ "'", e);
}
}
@Override
public Object javaToSqlArg(FieldType fieldType, Object obj) {
UUID uuid = (UUID) obj;
return uuid.toString();
}
@Override
public boolean isValidForField(Field field) {
// by default this is a noop
return true;
}
@Override
public boolean isValidGeneratedType() {
return true;
}
@Override
public boolean isSelfGeneratedId() {
return true;
}
@Override
public Object generatedId() {
return java.util.UUID.randomUUID();
}
@Override
public int getDefaultWidth() {
return DEFAULT_WIDTH;
}
}