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From "Clinton Begin" <clinton.be...@gmail.com>
Subject Re: How to convert BLOB/CLOB to String.
Date Thu, 30 Mar 2006 03:51:20 GMT
iBATIS comes with a BLOB and CLOB type handler....it has for some time now.

Clinton


On 3/27/06, Balaji <balaji@objectec.com> wrote:
>
> Does anyone have a custom type handler for Clob - String written that you
> can share.
>
> Thanks,
>
> Balaji
>
> ----- Original Message -----
> From: "Nathan Maves" <Nathan.Maves@Sun.COM>
> To: <user-java@ibatis.apache.org>
> Sent: Tuesday, March 14, 2006 9:59 AM
> Subject: Re: How to convert BLOB to String.
>
>
> > Yes.
> >
> > All you would have to do is write your own custom type handler.  It
> > would do just as Gustavo suggested but you would only have String
> > properties in your POJO.
> >
> > Nathan
> > On Mar 14, 2006, at 8:43 AM, Zsolt wrote:
> >
> > > Thank you Gustavo.
> > >
> > > Is it possible to configure ibatis to put the BLOB directly into a
> > > string?
> > >
> > > Zsolt
> > >
> > >
> > >> -----Original Message-----
> > >> From: Gustavo Henrique Sberze Ribas [mailto:gribas@cpqd.com.br]
> > >> Sent: Tuesday, March 14, 2006 12:11 PM
> > >> To: user-java@ibatis.apache.org
> > >> Subject: RE: How to convert BLOB to String.
> > >>
> > >> Hello,
> > >>
> > >> iBATIS can fetch the BLOB as a stream of bytes. One way of doing
> > >> what you
> > >> want is to create get/setters using byte[] that store/read to/from a
> > >> private
> > >> String field, ie:
> > >>
> > >> public class MyBean implements Serializable{
> > >>
> > >>  private String myString;
> > >>
> > >>  public void setStringAsByteArray(byte[] b) {
> > >> myString = String(b);
> > >>  }
> > >>  public byte[] getStringAsByteArray() {
> > >> return myString.getBytes();
> > >>  }
> > >>
> > >>  public void setMyString(String s) {
> > >> myString = s;
> > >>  }
> > >>  public String getMyString() {
> > >> return myString;
> > >>  }
> > >> }
> > >>
> > >> and your result map:
> > >>
> > >> <resultMap class="MyBean" id="MyBeanResultMap">
> > >>  <result column="BLOB_COLUMN" property="stringAsByteArray"
> > >> jdbcType="BLOB"/>
> > >> </resultMap>
> > >>
> > >> That way you also have the chance to set the appropriate encoding to
> > >> your string.
> > >>
> > >>
> > >> regards,
> > >>
> > >> --
> > >> Gustavo
> > >>
> > >>
> > >>
> > >>> -----Original Message-----
> > >>> From: Zsolt [mailto:zkoppanylist@intland.com]
> > >>> Sent: Tuesday, March 14, 2006 4:55 AM
> > >>> To: user-java@ibatis.apache.org
> > >>> Subject: How to convert BLOB to String.
> > >>>
> > >>>
> > >>> Hi,
> > >>>
> > >>> I have a BLOB field in mysql-4.1.18 and want to get that as
> > >>> String. The
> > >>> property I use as follows:
> > >>>
> > >>> setArgument(String arg) {...}
> > >>>
> > >>> In the mapping file I tried to use the code below but that
> > >>> didn't help.
> > >>>   <result property="argument" column="argument_types"
> > >>> jdbcType="BLOB"
> > >>>     javaType="java.lang.String"/>
> > >>>
> > >>> Instead of the string I get something like below:
> > >>> [B@185982c
> > >>>
> > >>> How can I fix that?
> > >>>
> > >>> I use ibatis-2.1.7.597.
> > >>>
> > >>> zsolt
> > >>>
> > >>>
> > >>>
> > >>>
> > >
> >
> >
> >
>
>

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