ClobTypeHandlerCallback.java

/*
 * Copyright 2004-2023 the original author or authors.
 *
 * 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
 *
 *    https://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.
 */
package com.ibatis.sqlmap.engine.type;

import com.ibatis.sqlmap.client.extensions.ParameterSetter;
import com.ibatis.sqlmap.client.extensions.ResultGetter;
import com.ibatis.sqlmap.client.extensions.TypeHandlerCallback;

import java.io.StringReader;
import java.sql.Clob;
import java.sql.SQLException;
import java.sql.Types;

/**
 * The Class ClobTypeHandlerCallback.
 */
public class ClobTypeHandlerCallback implements TypeHandlerCallback {

  public Object getResult(ResultGetter getter) throws SQLException {
    String value;
    Clob clob = getter.getClob();
    if (!getter.wasNull()) {
      int size = (int) clob.length();
      value = clob.getSubString(1, size);
    } else {
      value = null;
    }

    return value;
  }

  public void setParameter(ParameterSetter setter, Object parameter) throws SQLException {
    String s = (String) parameter;
    if (s != null) {
      StringReader reader = new StringReader(s);
      setter.setCharacterStream(reader, s.length());
    } else {
      setter.setNull(Types.CLOB);
    }
  }

  public Object valueOf(String s) {
    return s;
  }

}