SessionParamPool

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com.tonbeller.wcf.param
Class SessionParamPool

java.lang.Object
  com.tonbeller.wcf.param.SessionParamPool

All Implemented Interfaces:: java.util.Map

public class SessionParamPool
extends java.lang.Object
implements java.util.Map

A pool that contains all SessionParam instances of a session. JSPs, SQL Queries and MDX Queries may fetch parameter values that they need for display or computation.

Parameters may be accessed from a JSP with JSTL scripting, for example

   Selected Customer: <c:out value="${paramPool.myParam.displayValue}"/>

Parameters may be accessed in a JSTL SQL tag like

   <sql:query>
     ...
     <wcf:sqlParam name="..."/>
     ...
   </sql:query>

Parameters may be used in MDX Queries like

   <jp:mondrianQuery>
     ...
     <jp:mondrianParam name="..."/>
   </jp:mondrianQuery>

A SessionParamPool creates two session variables

paramPool the SessionParamPool instance that contains SessionParam's
sqlValueMap a map view to the SessionParamPool that contains the parameters name and their sql values

Author:: av

Nested Class Summary

Nested classes inherited from class java.util.Map

java.util.Map.Entry

Constructor Summary
`protected`	`SessionParamPool()`

Method Summary
`void`	`clear()`
`boolean`	`containsKey(java.lang.Object key)`
`boolean`	`containsValue(java.lang.Object value)`
`protected static SessionParamPool`	`createInstance()` creates a new SessionParamPool instance
`java.util.Set`	`entrySet()`
`java.lang.Object`	`get(java.lang.Object key)`
`SessionParam`	`getParam(java.lang.String name)`
`java.util.Map`	`getSqlValueMap()` returns a map that maps parameter names to their sql values.
`static SessionParamPool`	`instance(javax.servlet.http.HttpSession session)` finds or creates the SessionParamPool
`static SessionParamPool`	`instance(javax.servlet.jsp.PageContext pageContext)` finds or creates the SessionParamPool
`boolean`	`isEmpty()`
`java.util.Set`	`keySet()`
`void`	`popParams(java.util.Map memento)` restores the state of the pool that was modified by pushParams
`java.util.Map`	`pushParams(java.util.Collection c)` stores all SessionParam objects of c into the pool.
`java.lang.Object`	`put(java.lang.Object key, java.lang.Object value)`
`void`	`putAll(java.util.Map t)`
`java.lang.Object`	`remove(java.lang.Object key)`
`void`	`removeParam(SessionParam p)`
`SessionParam`	`removeParam(java.lang.String name)`
`SessionParam`	`setParam(SessionParam p)`
`int`	`size()`
`java.util.Collection`	`values()`

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface java.util.Map

equals, hashCode

Constructor Detail