package com.alibaba.fastjson.serializer;
import java.io.IOException;
import java.io.Reader;
import java.lang.reflect.Type;
import java.sql.Clob;
import java.sql.SQLException;
import com.alibaba.fastjson.JSONException;
public class ClobSeriliazer implements ObjectSerializer {
public final static ClobSeriliazer instance = new ClobSeriliazer();
public void write(JSONSerializer serializer, Object object, Object fieldName, Type fieldType, int features) throws IOException {
try {
if (object == null) {
serializer.writeNull();
return;
}
Clob clob = (Clob) object;
Reader reader = clob.getCharacterStream();
StringBuilder buf = new StringBuilder();
try {
char[] chars = new char[2048];
for (;;) {
int len = reader.read(chars, 0, chars.length);
if (len < 0) {
break;
}
buf.append(chars, 0, len);
}
} catch(Exception ex) {
throw new JSONException("read string from reader error", ex);
}
String text = buf.toString();
reader.close();
serializer.write(text);
} catch (SQLException e) {
throw new IOException("write clob error", e);
}
}
}