# com.bea.wlw.netui.tags.databinding.invoke
CallPageFlow Class

public class CallPageFlow
extends `CallMethod`

A tag that is used to call a method on the current `PageFlowController```. The PageFlow on which to call the method is found given the location of the JSP page in the webapp; if no PageFlow is found in the current directory, an `ObjectNotFoundException``` is thrown and the tag execution fails.

This tag extends the `CallMethod``` tag, which defines additional attributes.

Once the method has been called, any return value is set in the `PageContext``` attribute map under the `resultId` attribute that is provided on the `CallMethod``` tag. In the case that the return value is a primitive type, the primitive type's object wrapper is set in the `PageContext` under the `resultId` key.

Attribute Descriptions
Attribute | Required | Runtime Expression Evaluation | Data Bindable
--- | --- | --- | ---
failOnError | No | No | No
A boolean that if `true` will cause the tag to report any method invocation errors in-line in the rendered page.
method | Yes | No | No
Name of the method in the page flow that will be invoked.
resultId | No | No | No
The `PageContext``` attribute name where the result, if non-null, is stored.

Related Topics

<netui-data:callPageFlow> Tag Sample
``MethodParameter``
``CallMethod``
``CallControl``

Hierarchy
  `Object`
  `TagSupport`
  `BodyTagSupport`
  `AbstractBaseTag`
  `AbstractCallMethod`
  `CallMethod`
  `CallPageFlow`

All Implemented Interfaces
  `BodyTag`, `IterationTag`, `Serializable`, `Tag`

## Field Summary

Fields from com.bea.wlw.netui.tags`.`AbstractBaseTag``
``ATTR_GENERAL`, `ATTR_GENERAL_EXPRESSION`, `ATTR_JAVASCRIPT`, `ATTR_STYLE`, `CLASS`, `ID`, `JAVASCRIPT_STATUS`, `NAME`, `NETUI_UNIQUE_CNT`, `ONCLICK`, `ONDBLCLICK`, `ONKEYDOWN`, `ONKEYPRESS`, `ONKEYUP`, `ONMOUSEDOWN`, `ONMOUSEMOVE`, `ONMOUSEOUT`, `ONMOUSEOVER`, `ONMOUSEUP`, `STYLE`, `TABINDEX``

Fields from javax.servlet.jsp.tagext`.`BodyTagSupport``
`bodyContent`

Fields from javax.servlet.jsp.tagext`.`TagSupport``
`id, pageContext`

Fields from interface javax.servlet.jsp.tagext`.`BodyTag``
`EVAL_BODY_BUFFERED, EVAL_BODY_TAG`

Fields from interface javax.servlet.jsp.tagext`.`IterationTag``
`EVAL_BODY_AGAIN`

Fields from interface javax.servlet.jsp.tagext`.`Tag``
`EVAL_BODY_INCLUDE, EVAL_PAGE, SKIP_BODY, SKIP_PAGE`

## Constructor Summary

CallPageFlow()

## Method Summary

`protected `String`` | `getObjectName`() Get the name of the object that is the target of the invocation.
`public `String`` | `getTagName`() Get the name of this tag.
`protected `Object`` | `resolveObject`() Get the PageFlow for the using JSP's directory.

Methods from `com.bea.wlw.netui.tags.databinding.invoke.`CallMethod``
``findMethod`, `getObject`, `localRelease`, `setObject``

Methods from `com.bea.wlw.netui.tags.databinding.invoke.`AbstractCallMethod``
``addParameter`, `doEndTag`, `doStartTag`, `findMethod`, `getFailOnError`, `getMethod`, `getObjectName`, `getParameterNodes`, `getResultId`, `handleReturnValue`, `localRelease`, `resolveObject`, `setFailOnError`, `setMethod`, `setResultId``

Methods from `com.bea.wlw.netui.tags.`AbstractBaseTag``
``addTagIdMapping`, `evaluateAttributeToString`, `filter`, `filter`, `getJavaScriptUtils`, `getNearestForm`, `getScriptReporter`, `getTagName`, `getUserLocale`, `localRelease`, `registerTagError`, `release`, `renderAttribute`, `rewriteName`, `write``

Methods from `javax.servlet.jsp.tagext.`BodyTagSupport``
`doAfterBody, doEndTag, doInitBody, doStartTag, getBodyContent, getPreviousOut, release, setBodyContent`

Methods from `javax.servlet.jsp.tagext.`TagSupport``
`doAfterBody, doEndTag, doStartTag, findAncestorWithClass, getId, getParent, getValue, getValues, release, removeValue, setId, setPageContext, setParent, setValue`

Methods from class `java.lang.`Object``
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Methods from interface `javax.servlet.jsp.tagext.`BodyTag``
`doInitBody, setBodyContent`

Methods from interface `javax.servlet.jsp.tagext.`IterationTag``
`doAfterBody`

Methods from interface `javax.servlet.jsp.tagext.`Tag``
`doEndTag, doStartTag, getParent, release, setPageContext, setParent`

## Constructor Detail

### CallPageFlow

    public CallPageFlow()

## Method Detail

### getObjectName() Method

    protected String getObjectName()

Get the name of the object that is the target of the invocation.

Overrides
  `CallMethod.getObjectName()`

#### Returns

a name for the object on which the method will be invoked.

### getTagName() Method

    public String getTagName()

Get the name of this tag. This is used to identify the type of this tag for reporting tag errors.

Overrides
  `CallMethod.getTagName()`

#### Returns

a constant String representing the name of this tag.

### resolveObject() Method

    protected Object resolveObject()
         throws ObjectNotFoundException

Get the PageFlow for the using JSP's directory. This is an implementation of the `CallMethod.resolveObject()``` method that finds the current PageFlow using the `PageFlowUtils.ensureCurrentPageFlow(HttpServletRequest, HttpServletResponse)``` method.

Overrides
  `CallMethod.resolveObject()`

#### Returns

the current PageFlow. If there is no current PageFlow, the `ObjectNotFoundException``` will be thrown.

#### Exceptions

``ObjectNotFoundException``