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Hello,

I want to add a custom tag to my application so it will be more
mainatable.
Let's say I have some tree like structure that can be used like that in
a scriptlet:

AndOrTree t = new AndOrTree();
t.addCondition("1","eq","cpu-time","5");
t.addCondition("2","eq","size","8");
t.addAccumulator("3","1","2",AndOrTree.ACCUMULATOR .AND);
t.addCondition("4","eq","fullscans","0");
t.addAccumulator("5","3","4",AndOrTree.ACCUMULATOR .OR);
out.print(t.toString());

The addCondition and addAccumulator functions take as a first argument
an "id"
this id uniquelly identifies the node in the tree.

The addAccumulator takes two "ids" of nodes, which will be the new
Node's sons.

So basically when I create a new "Accumulator" with
t.addAccumulator("5","3","4",AndOrTree.ACCUMULATOR .OR); I create a new
Node with identifier 5 that is a parent of nodes 3 and 4.

Now, I want to keep the same functionallity under customer Tags.
In my vision, it should look something like that:

<aot:condition id="1" operator="<" property="size" value="8" >
<aot:condition id="2" operator="<" property="cpu-time" value="85" >
<aot:accumulator id="3" name1="1" name2="2" ...>

Since there is a Tree out there, I guess I should also implement a tag
that initializes the tree
The tree should also be transferred to other tags for reference, so it
should be something like that:

<aot:tree id="myTree">
<aot:condition tree="myTree" id="1" operator="<" property="size"
value="8" >
<aot:condition tree="myTree" id="2" operator="<" property="cpu-time"
value="85" >
<aot:accumulator tree="myTree" id="3" name1="1" name2="2" ...>

I "extended" TagSupport and did the previous bit of
tree.addCondition(this.id,this.operator,this.prope rty,this.value)
inside the doStartTag () function.
My problem is with the TreeTag, How can I implement and extended
TagSupport that will have a reference to a AndOrTree that I can later
set as a member of the other Tag classes?

My tag handlers looks like that:
public class ConditionTag extends javax.servlet.jsp.tagext.TagSupport{

//For the TLD calls;
private String property;
private String operator;
private String value;
private AndOrTree tree;

/** Creates a new instance of ConditionTag */
public ConditionTag() {
}
public void setOperator(String operator) {
this.operator = operator;
}

public String getOperator() {
return operator;
}

public String getValue() {
return value;
}

public String getProperty() {
return property;
}

public void setValue(String value) {
this.value = value;
}

public void setProperty(String property) {
this.property = property;
}

public AndOrTree getTree() {
return tree;
}

public void setTree(AndOrTree tree) {
this.tree = tree;
}

public int doStartTag ()
{

tree.addCondition(this.id,this.operator,this.prope rty,this.value);



return SKIP_BODY;
}


public int doEndTag()
{
return EVAL_PAGE;
}


}

How should I implement the TreeTag class?
Thanks.

Well,
you could do a little something like this :

public class TreeTag extends javax.servlet.jsp.tagext.TagSupport {
private AndOrTree tree = new AndOrTree();

public AndOrTree getAndOrTree() {
return tree;
}
}

and then in your sub-tags, you can do this whenever you need the tree :
((TreeTag) getParent()).getAndOrTree()

but this requires that your condition and accumulator tags always are
inside a treetag.
<aot:tree>
<aot:condition .... />
<aot:accumulator ... />
</aot:tree>

/Steen

Mize-ze wrote:
> Hello,
>
> I want to add a custom tag to my application so it will be more
> mainatable.
> Let's say I have some tree like structure that can be used like that in
> a scriptlet:
>
> AndOrTree t = new AndOrTree();
> t.addCondition("1","eq","cpu-time","5");
> t.addCondition("2","eq","size","8");
> t.addAccumulator("3","1","2",AndOrTree.ACCUMULATOR .AND);
> t.addCondition("4","eq","fullscans","0");
> t.addAccumulator("5","3","4",AndOrTree.ACCUMULATOR .OR);
> out.print(t.toString());
>
> The addCondition and addAccumulator functions take as a first argument
> an "id"
> this id uniquelly identifies the node in the tree.
>
> The addAccumulator takes two "ids" of nodes, which will be the new
> Node's sons.
>
> So basically when I create a new "Accumulator" with
> t.addAccumulator("5","3","4",AndOrTree.ACCUMULATOR .OR); I create a new
> Node with identifier 5 that is a parent of nodes 3 and 4.
>
> Now, I want to keep the same functionallity under customer Tags.
> In my vision, it should look something like that:
>
> <aot:condition id="1" operator="<" property="size" value="8" >
> <aot:condition id="2" operator="<" property="cpu-time" value="85" >
> <aot:accumulator id="3" name1="1" name2="2" ...>
>
> Since there is a Tree out there, I guess I should also implement a tag
> that initializes the tree
> The tree should also be transferred to other tags for reference, so it
> should be something like that:
>
> <aot:tree id="myTree">
> <aot:condition tree="myTree" id="1" operator="<" property="size"
> value="8" >
> <aot:condition tree="myTree" id="2" operator="<" property="cpu-time"
> value="85" >
> <aot:accumulator tree="myTree" id="3" name1="1" name2="2" ...>
>
> I "extended" TagSupport and did the previous bit of
> tree.addCondition(this.id,this.operator,this.prope rty,this.value)
> inside the doStartTag () function.
> My problem is with the TreeTag, How can I implement and extended
> TagSupport that will have a reference to a AndOrTree that I can later
> set as a member of the other Tag classes?
>
> My tag handlers looks like that:
> public class ConditionTag extends javax.servlet.jsp.tagext.TagSupport{
>
> //For the TLD calls;
> private String property;
> private String operator;
> private String value;
> private AndOrTree tree;
>
> /** Creates a new instance of ConditionTag */
> public ConditionTag() {
> }
> public void setOperator(String operator) {
> this.operator = operator;
> }
>
> public String getOperator() {
> return operator;
> }
>
> public String getValue() {
> return value;
> }
>
> public String getProperty() {
> return property;
> }
>
> public void setValue(String value) {
> this.value = value;
> }
>
> public void setProperty(String property) {
> this.property = property;
> }
>
> public AndOrTree getTree() {
> return tree;
> }
>
> public void setTree(AndOrTree tree) {
> this.tree = tree;
> }
>
> public int doStartTag ()
> {
>
> tree.addCondition(this.id,this.operator,this.prope rty,this.value);
>
>
>
> return SKIP_BODY;
> }
>
>
> public int doEndTag()
> {
> return EVAL_PAGE;
> }
>
>
> }
>
> How should I implement the TreeTag class?
> Thanks.

I've tried something else, my JSP file looks something like that now:

<aot:tree id="tree" />
<aot:condition id="1" tree="tree" operator="eq" property="cpu-time"
value="5"/>


I assume that the id attribute in aot:tree relates to the TagSupport
object, Which I called treeTag.
The condition tag then gets the reference to the TreeTag which holds
the Tree object itself.
However I could not get it to work.
Any Ideas?


TreeTag:: public int doStartTag ()
{
this.treeObject = new AndOrTree();
return SKIP_BODY;
}

ConditionTag:: public void setTree(Tags.TreeTag tree) {
this.tree = tree;
this.treeObj = tree.getTreeObject();
}

Then the ConditionTag::doStartTag uses the treeObj!
Makes sense?


steen wrote:
> Well,
> you could do a little something like this :
>
> public class TreeTag extends javax.servlet.jsp.tagext.TagSupport {
> private AndOrTree tree = new AndOrTree();
>
> public AndOrTree getAndOrTree() {
> return tree;
> }
> }
>
> and then in your sub-tags, you can do this whenever you need the tree :
> ((TreeTag) getParent()).getAndOrTree()
>
> but this requires that your condition and accumulator tags always are
> inside a treetag.
> <aot:tree>
> <aot:condition .... />
> <aot:accumulator ... />
> </aot:tree>
>
> /Steen
>
> Mize-ze wrote:
> > Hello,
> >
> > I want to add a custom tag to my application so it will be more
> > mainatable.
> > Let's say I have some tree like structure that can be used like that in
> > a scriptlet:
> >
> > AndOrTree t = new AndOrTree();
> > t.addCondition("1","eq","cpu-time","5");
> > t.addCondition("2","eq","size","8");
> > t.addAccumulator("3","1","2",AndOrTree.ACCUMULATOR .AND);
> > t.addCondition("4","eq","fullscans","0");
> > t.addAccumulator("5","3","4",AndOrTree.ACCUMULATOR .OR);
> > out.print(t.toString());
> >
> > The addCondition and addAccumulator functions take as a first argument
> > an "id"
> > this id uniquelly identifies the node in the tree.
> >
> > The addAccumulator takes two "ids" of nodes, which will be the new
> > Node's sons.
> >
> > So basically when I create a new "Accumulator" with
> > t.addAccumulator("5","3","4",AndOrTree.ACCUMULATOR .OR); I create a new
> > Node with identifier 5 that is a parent of nodes 3 and 4.
> >
> > Now, I want to keep the same functionallity under customer Tags.
> > In my vision, it should look something like that:
> >
> > <aot:condition id="1" operator="<" property="size" value="8" >
> > <aot:condition id="2" operator="<" property="cpu-time" value="85" >
> > <aot:accumulator id="3" name1="1" name2="2" ...>
> >
> > Since there is a Tree out there, I guess I should also implement a tag
> > that initializes the tree
> > The tree should also be transferred to other tags for reference, so it
> > should be something like that:
> >
> > <aot:tree id="myTree">
> > <aot:condition tree="myTree" id="1" operator="<" property="size"
> > value="8" >
> > <aot:condition tree="myTree" id="2" operator="<" property="cpu-time"
> > value="85" >
> > <aot:accumulator tree="myTree" id="3" name1="1" name2="2" ...>
> >
> > I "extended" TagSupport and did the previous bit of
> > tree.addCondition(this.id,this.operator,this.prope rty,this.value)
> > inside the doStartTag () function.
> > My problem is with the TreeTag, How can I implement and extended
> > TagSupport that will have a reference to a AndOrTree that I can later
> > set as a member of the other Tag classes?
> >
> > My tag handlers looks like that:
> > public class ConditionTag extends javax.servlet.jsp.tagext.TagSupport{
> >
> > //For the TLD calls;
> > private String property;
> > private String operator;
> > private String value;
> > private AndOrTree tree;
> >
> > /** Creates a new instance of ConditionTag */
> > public ConditionTag() {
> > }
> > public void setOperator(String operator) {
> > this.operator = operator;
> > }
> >
> > public String getOperator() {
> > return operator;
> > }
> >
> > public String getValue() {
> > return value;
> > }
> >
> > public String getProperty() {
> > return property;
> > }
> >
> > public void setValue(String value) {
> > this.value = value;
> > }
> >
> > public void setProperty(String property) {
> > this.property = property;
> > }
> >
> > public AndOrTree getTree() {
> > return tree;
> > }
> >
> > public void setTree(AndOrTree tree) {
> > this.tree = tree;
> > }
> >
> > public int doStartTag ()
> > {
> >
> > tree.addCondition(this.id,this.operator,this.prope rty,this.value);
> >
> >
> >
> > return SKIP_BODY;
> > }
> >
> >
> > public int doEndTag()
> > {
> > return EVAL_PAGE;
> > }
> >
> >
> > }
> >
> > How should I implement the TreeTag class?
> > Thanks.

I guess that my problem is that the tree attribute in condition tag is
treated by me as a TreeTag object in the setTree method:

public void setTree(Tags.TreeTag tree) {
this.tree = tree;
this.treeObj = tree.getTreeObject();
}

While from the JSP point of view I am transferring a string.
Is that my problem? how can I send a treeTag or better yet a real
AndOrTree?

Thanks.




Mize-ze wrote:
> I've tried something else, my JSP file looks something like that now:
>
> <aot:tree id="tree" />
> <aot:condition id="1" tree="tree" operator="eq" property="cpu-time"
> value="5"/>
>
>
> I assume that the id attribute in aot:tree relates to the TagSupport
> object, Which I called treeTag.
> The condition tag then gets the reference to the TreeTag which holds
> the Tree object itself.
> However I could not get it to work.
> Any Ideas?
>
>
> TreeTag:: public int doStartTag ()
> {
> this.treeObject = new AndOrTree();
> return SKIP_BODY;
> }
>
> ConditionTag:: public void setTree(Tags.TreeTag tree) {
> this.tree = tree;
> this.treeObj = tree.getTreeObject();
> }
>
> Then the ConditionTag::doStartTag uses the treeObj!
> Makes sense?
>
>
> steen wrote:
> > Well,
> > you could do a little something like this :
> >
> > public class TreeTag extends javax.servlet.jsp.tagext.TagSupport {
> > private AndOrTree tree = new AndOrTree();
> >
> > public AndOrTree getAndOrTree() {
> > return tree;
> > }
> > }
> >
> > and then in your sub-tags, you can do this whenever you need the tree :
> > ((TreeTag) getParent()).getAndOrTree()
> >
> > but this requires that your condition and accumulator tags always are
> > inside a treetag.
> > <aot:tree>
> > <aot:condition .... />
> > <aot:accumulator ... />
> > </aot:tree>
> >
> > /Steen
> >
> > Mize-ze wrote:
> > > Hello,
> > >
> > > I want to add a custom tag to my application so it will be more
> > > mainatable.
> > > Let's say I have some tree like structure that can be used like that in
> > > a scriptlet:
> > >
> > > AndOrTree t = new AndOrTree();
> > > t.addCondition("1","eq","cpu-time","5");
> > > t.addCondition("2","eq","size","8");
> > > t.addAccumulator("3","1","2",AndOrTree.ACCUMULATOR .AND);
> > > t.addCondition("4","eq","fullscans","0");
> > > t.addAccumulator("5","3","4",AndOrTree.ACCUMULATOR .OR);
> > > out.print(t.toString());
> > >
> > > The addCondition and addAccumulator functions take as a first argument
> > > an "id"
> > > this id uniquelly identifies the node in the tree.
> > >
> > > The addAccumulator takes two "ids" of nodes, which will be the new
> > > Node's sons.
> > >
> > > So basically when I create a new "Accumulator" with
> > > t.addAccumulator("5","3","4",AndOrTree.ACCUMULATOR .OR); I create a new
> > > Node with identifier 5 that is a parent of nodes 3 and 4.
> > >
> > > Now, I want to keep the same functionallity under customer Tags.
> > > In my vision, it should look something like that:
> > >
> > > <aot:condition id="1" operator="<" property="size" value="8" >
> > > <aot:condition id="2" operator="<" property="cpu-time" value="85" >
> > > <aot:accumulator id="3" name1="1" name2="2" ...>
> > >
> > > Since there is a Tree out there, I guess I should also implement a tag
> > > that initializes the tree
> > > The tree should also be transferred to other tags for reference, so it
> > > should be something like that:
> > >
> > > <aot:tree id="myTree">
> > > <aot:condition tree="myTree" id="1" operator="<" property="size"
> > > value="8" >
> > > <aot:condition tree="myTree" id="2" operator="<" property="cpu-time"
> > > value="85" >
> > > <aot:accumulator tree="myTree" id="3" name1="1" name2="2" ...>
> > >
> > > I "extended" TagSupport and did the previous bit of
> > > tree.addCondition(this.id,this.operator,this.prope rty,this.value)
> > > inside the doStartTag () function.
> > > My problem is with the TreeTag, How can I implement and extended
> > > TagSupport that will have a reference to a AndOrTree that I can later
> > > set as a member of the other Tag classes?
> > >
> > > My tag handlers looks like that:
> > > public class ConditionTag extends javax.servlet.jsp.tagext.TagSupport{
> > >
> > > //For the TLD calls;
> > > private String property;
> > > private String operator;
> > > private String value;
> > > private AndOrTree tree;
> > >
> > > /** Creates a new instance of ConditionTag */
> > > public ConditionTag() {
> > > }
> > > public void setOperator(String operator) {
> > > this.operator = operator;
> > > }
> > >
> > > public String getOperator() {
> > > return operator;
> > > }
> > >
> > > public String getValue() {
> > > return value;
> > > }
> > >
> > > public String getProperty() {
> > > return property;
> > > }
> > >
> > > public void setValue(String value) {
> > > this.value = value;
> > > }
> > >
> > > public void setProperty(String property) {
> > > this.property = property;
> > > }
> > >
> > > public AndOrTree getTree() {
> > > return tree;
> > > }
> > >
> > > public void setTree(AndOrTree tree) {
> > > this.tree = tree;
> > > }
> > >
> > > public int doStartTag ()
> > > {
> > >
> > > tree.addCondition(this.id,this.operator,this.prope rty,this.value);
> > >
> > >
> > >
> > > return SKIP_BODY;
> > > }
> > >
> > >
> > > public int doEndTag()
> > > {
> > > return EVAL_PAGE;
> > > }
> > >
> > >
> > > }
> > >
> > > How should I implement the TreeTag class?
> > > Thanks.