[ http://jira.codehaus.org/browse/DISPL-120?page=comments#action_82965 ]
S Vinod commented on DISPL-120:
-------------------------------
I have implemented a different solution for the same problem. One can pass
java.util.HashMap which contains the multiple parameters needed .
The changes one has to do are
a. ColumnTag.java
1. imports
import java.io.UnsupportedEncodingException;
import java.net.URLEncoder;
import java.util.HashMap;
import java.util.Iterator;
2 . public class ColumnTag extends BodyTagSupport implements
MediaUtil.SupportsMedia
// evaluate expression.
// note the value is fixed, not based on any object created
during iteration
// this is here for compatibility with the old version
mainly
Object paramValue =
tableTag.evaluateExpression(expression.toString());
String key;
if ( paramValue instanceof java.util.HashMap)
{
Iterator itr =
((HashMap)paramValue).keySet().iterator();
while(itr.hasNext())
{
key=(String) itr.next();
colHref.addParameter(key,
((HashMap)paramValue).get(key));
}
}
else
{
colHref.addParameter(this.paramId, paramValue);
}
b : Column.java
1 imports
import java.util.HashMap;
import java.util.Iterator;
2. private Href getColumnHref(String columnContent)
if (paramValue != null)
try {
String key;
if ( paramValue instanceof java.util.HashMap)
{
Iterator itr =
((HashMap)paramValue).keySet().iterator();
while(itr.hasNext())
{
key=(String) itr.next();
colHref.addParameter(key, URLEncoder
.encode((String)((HashMap)paramValue).get(key), StringUtils
.defaultString(row.getParentTable()
.getEncoding(), "UTF8")));
}
}
else
{
colHref.addParameter(header.getParamName(),
URLEncoder
.encode(paramValue.toString(), StringUtils
.defaultString(row.getParentTable()
.getEncoding(), "UTF8")));
}
} catch (UnsupportedEncodingException e) {
throw new UnhandledException(e);
}
Now in JSP you can pass any java.util.HapMap like one does using struts
html:link tag !!!
ALL THE BEST !!!!!!!!!
contact me : [EMAIL PROTECTED] for any queries
Vinod
> Multiple Parameters in Column URL (patch included)
> --------------------------------------------------
>
> Key: DISPL-120
> URL: http://jira.codehaus.org/browse/DISPL-120
> Project: DisplayTag
> Issue Type: Improvement
> Components: Tag Library
> Affects Versions: 1.0
> Reporter: Ravikumar Tadikonda
> Priority: Minor
> Fix For: TBD
>
> Attachments: displaytag-2.0.jar
>
>
> Multiple Parameters in Column URL
> I have added functionality in displaytag to have more than one parameter
> in column href.
> this functionality also support to add displaytag id , row number in href.
> example :
> <display:table name="sessionScope.productDetails" id="detailGrid"
> defaultsort="1" requestURI="" pagesize="25">
> <display:column property="productcode" href=""
> paramId="grid,rowNumber,productcode,status"
> paramProperty=":id,:rowNum,productcode,status"/>
> <display:column property="description" />
> <display:column property="status" title="Actions" />
> </display:table>
>
> this will result in creating link like
> http://formurl?grid=detailGrid&rowNumber=listRownumber&productcode=productcode&status=status
> paramId : The list of the parameters separated by ','
> paramProperty : The list of property in the same order as paramId seperated
> by ','.
> If the paramId has more than one parameter, the paramProperty list must
> have the same number of property
> If the paramId has only one parameter and paramProperty is null then
> the current column value will be added to the href.
> This is an existing functionalty and will ensule that this
> enhancement will not break the existing code.
>
> I defined two predefined paramProperty :id, :rowNum
> :id parameter will give the id value of the table tag .
> :rowNum will give the current row Number
>
>
> I need this functionality in my current application that I am using
> displaytag . When I search on the mailing list for help the answer I got is
> use Decorator or Scriptlet.
>
> I need this kind of functionality in my project, which has lot of grids and
> I will end up with writing TableDecorator for each grid or writing Scriptlet
> in each grid.
>
> I thought that this is very trivial functionality and lots of users like me
> are looking for this kind of functionality built into this tag.
>
> I want this functionality to be implemented in displaytag . I am attaching
> the diff . Pls have a look at this.
>
> PS: This enhancement will satisfy the following mailing list discussions.
>
> http://sourceforge.net/mailarchive/forum.php?thread_id=5967258&forum_id=28703
> http://sourceforge.net/mailarchive/forum.php?thread_id=5935358&forum_id=28703
> https://sourceforge.net/forum/forum.php?thread_id=975630&forum_id=249317
> https://sourceforge.net/forum/forum.php?thread_id=1094161&forum_id=249317
>
>
> Thanks
> -Ravi.
> CVS patch :
> Index: src/java/org/displaytag/model/Column.java
> ===================================================================
> RCS file:
> /cvsroot/displaytag/displaytag/src/java/org/displaytag/model/Column.java,v
> retrieving revision 1.17
> diff -u -r1.17 Column.java
> --- src/java/org/displaytag/model/Column.java 16 Nov 2004 19:27:31 -0000
> 1.17
> +++ src/java/org/displaytag/model/Column.java 19 Nov 2004 03:58:52 -0000
> @@ -12,11 +12,13 @@
> package org.displaytag.model;
>
> import org.apache.commons.lang.ObjectUtils;
> +import org.apache.commons.lang.StringUtils;
> import org.apache.commons.lang.builder.ToStringBuilder;
> import org.displaytag.decorator.AutolinkColumnDecorator;
> import org.displaytag.decorator.TableDecorator;
> import org.displaytag.exception.DecoratorException;
> import org.displaytag.exception.ObjectLookupException;
> +import org.displaytag.exception.InvalidTagAttributeValueException;
> import org.displaytag.util.Anchor;
> import org.displaytag.util.CompatibleUrlEncoder;
> import org.displaytag.util.Href;
> @@ -133,7 +135,7 @@
> * @throws ObjectLookupException for errors in bean property lookup
> * @throws DecoratorException if a column decorator is used and an
> exception is thrown during value decoration
> */
> - public String getOpenTag() throws ObjectLookupException,
> DecoratorException
> + public String getOpenTag() throws DecoratorException,
> ObjectLookupException, InvalidTagAttributeValueException
> {
> this.stringValue = createChoppedAndLinkedValue();
>
> @@ -156,7 +158,7 @@
> * @throws ObjectLookupException for errors in bean property lookup
> * @throws DecoratorException if a column decorator is used and an
> exception is thrown during value decoration
> */
> - public String createChoppedAndLinkedValue() throws
> ObjectLookupException, DecoratorException
> + public String createChoppedAndLinkedValue() throws DecoratorException,
> ObjectLookupException, InvalidTagAttributeValueException
> {
>
> String fullValue = ObjectUtils.toString(getValue(true));
> @@ -208,36 +210,61 @@
> * @return generated Href
> * @throws ObjectLookupException for errors in lookin up object
> properties
> */
> - private Href getColumnHref(String columnContent) throws
> ObjectLookupException
> + private Href getColumnHref(String columnContent) throws
> ObjectLookupException ,InvalidTagAttributeValueException
> {
> // copy href
> Href colHref = new Href(this.header.getHref());
>
> // do we need to add a param?
> - if (this.header.getParamName() != null)
> - {
> -
> - Object paramValue;
> -
> - if (this.header.getParamProperty() != null)
> - {
> - // different property, go get it
> - paramValue =
> LookupUtil.getBeanProperty(this.row.getObject(),
> this.header.getParamProperty());
> -
> - }
> - else
> - {
> - // same property as content
> - paramValue = columnContent;
> - }
> -
> - if (paramValue != null)
> - {
> - colHref.addParameter(this.header.getParamName(),
> CompatibleUrlEncoder.encode(
> - paramValue.toString(),
> - this.row.getParentTable().getEncoding()));
> - }
> - }
> + String param = this.header.getParamName();
> + if (param != null)
> + {
> +
> + String[] paramArray = StringUtils.split(param,',');
> +
> + String property = this.header.getParamProperty();
> +
> + if ((property == null ) && paramArray.length == 1)
> + {
> + colHref.addParameter(param,
> CompatibleUrlEncoder.encode(
> + columnContent.toString(),
> +
> this.row.getParentTable().getEncoding()));
> +
> + }else
> + {
> +
> + String[] propertyArray =
> StringUtils.split(property,',');
> +
> + if(paramArray.length != propertyArray.length )
> + throw new
> InvalidTagAttributeValueException(getClass(), param, property); //$NON-NLS-1$
> +
> +
> + for(int i= 0 ; i < paramArray.length ; i++ )
> + {
> + String propertyString =
> propertyArray[i];
> + Object paramValue = null;
> +
> + if(propertyString.startsWith(":"))
> + {
> +
> if(TagConstants.TABLE_TAG_ID.equals(propertyString))
> + paramValue =
> this.row.getParentTable().getId();
> + else if
> (TagConstants.TABLE_ROW_NUM.equals(propertyString))
> + paramValue =
> String.valueOf(this.row.getRowNumber());
> + } else
> + {
> + paramValue =
> LookupUtil.getBeanProperty(this.row.getObject(), propertyString);
> + }
> +
> + if (paramValue != null)
> + {
> +
> colHref.addParameter(paramArray[i], CompatibleUrlEncoder.encode(
> +
> paramValue.toString(),
> +
> this.row.getParentTable().getEncoding()));
> + }
> + }
> + }
> +
> + }
> return colHref;
> }
>
> Index: src/java/org/displaytag/model/TableModel.java
> ===================================================================
> RCS file:
> /cvsroot/displaytag/displaytag/src/java/org/displaytag/model/TableModel.java,v
> retrieving revision 1.17
> diff -u -r1.17 TableModel.java
> --- src/java/org/displaytag/model/TableModel.java 16 Nov 2004 23:07:26
> -0000 1.17
> +++ src/java/org/displaytag/model/TableModel.java 19 Nov 2004 03:58:52
> -0000
> @@ -121,7 +121,15 @@
> {
> this.id = tableId;
> }
> -
> +
> + /**
> + * Getter for the tablemodel id.
> + * @return the tableId id of table tag
> + */
> + public String getId()
> + {
> + return this.id;
> + }
> /**
> * get the full list.
> * @return the full list containing Row objects
> Index: src/java/org/displaytag/tags/TableTag.java
> ===================================================================
> RCS file:
> /cvsroot/displaytag/displaytag/src/java/org/displaytag/tags/TableTag.java,v
> retrieving revision 1.92
> diff -u -r1.92 TableTag.java
> --- src/java/org/displaytag/tags/TableTag.java 18 Nov 2004 19:42:28
> -0000 1.92
> +++ src/java/org/displaytag/tags/TableTag.java 19 Nov 2004 03:58:54
> -0000
> @@ -1601,7 +1601,7 @@
> * @throws ObjectLookupException for errors in looking up properties in
> objects
> * @throws DecoratorException for errors returned by decorators
> */
> - private String getTableBody() throws ObjectLookupException,
> DecoratorException
> + private String getTableBody() throws DecoratorException,
> ObjectLookupException, InvalidTagAttributeValueException
> {
> StringBuffer buffer = new StringBuffer();
>
> Index: src/java/org/displaytag/util/TagConstants.java
> ===================================================================
> RCS file:
> /cvsroot/displaytag/displaytag/src/java/org/displaytag/util/TagConstants.java,v
> retrieving revision 1.14
> diff -u -r1.14 TagConstants.java
> --- src/java/org/displaytag/util/TagConstants.java 13 Nov 2004 15:10:40
> -0000 1.14
> +++ src/java/org/displaytag/util/TagConstants.java 19 Nov 2004 03:58:55
> -0000
> @@ -255,6 +255,16 @@
> */
> public static final String EMPTY_STRING = ""; //$NON-NLS-1$
>
> + /**
> + * DisplayTag <code>id</code> properiry.
> + */
> + public static final String TABLE_TAG_ID = ":id"; //$NON-NLS-1$
> +
> + /**
> + * DisplayTag <code>rowNum</code> properiry.
> + */
> + public static final String TABLE_ROW_NUM = ":rowNum"; //$NON-NLS-1$
> +
> /**
> * utility class - don't instantiate.
> */
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