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POHow to access seam component that was created at the time the parameter value was set?
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  1. POHow to access seam component that was created at the time the parameter value was set?
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    copied!<p>My url has a parameter name=SSA-COLUMB. The seam parameter (set in DevicesList.page.xml) is</p> <pre><code>&lt;param name="name" value="#{searchDeviceName.paramValue}"/&gt; </code></pre> <p>When I load the page the searchDeviceName component is instantiated and paramValue is set. I verified it with a print statement on setParamValue(). Here is the code for SearchDeviceName.java</p> <pre><code>@Name("searchDeviceName") @Scope(ScopeType.CONVERSATION) public class SearchDeviceName { public String paramValue; public Table table; public String sqlString; public ArrayList&lt;JoinClause&gt; joinList; public SearchDeviceName() { Table devTable = new Table("devices","d","dev_id"); setTable(devTable); setSqlString(" d.name like '%"+paramValue+"%'"); } &lt;getters and setters&gt; } </code></pre> <p>I have a stateless session bean that grabs an instance of this component to use in building a sql statement. But when I grab the component instance, it does not have paramValue set. Apparently it is a new instance of the component.</p> <pre><code>SearchDeviceName searchObj = (SearchDeviceName) Component.getInstance("searchDeviceName", ScopeType.CONVERSATION); </code></pre> <p>This is not the same instance of searchDeviceName that was instantiated when the parameter value got set. I know this because paramValue is null rather than set to "SSA-COLUMB".</p> <p>Is there any way to use in my session bean the same component intance that got created when the parameter value was set? How do I grab it?</p> <p>Here is the code that grabs the component</p> <pre><code>@Name("idListBuilder") public class IdListBuilder { @In private Context conversationContext; @In(create = true) EntityManager entityManager; private String sqlQuery; private Table headTable; private ArrayList&lt;String&gt; restrictionValues = new ArrayList&lt;String&gt;(); private ArrayList&lt;Table&gt; restrictionJoinTables = new ArrayList&lt;Table&gt;(); public IdListBuilder(Table table) { this.headTable = table; this.sqlQuery = "SELECT " + table.alias + "." + table.primaryKey + " FROM " + table.name + " " + table.alias; searchObjects.add("searchDeviceName"); searchObjects.add("searchOfficeState"); } public List&lt;Integer&gt; getIdList(){ evaluateSearchObjects(); createQuery(); /* Code for grabbing resultlist of query goes here. return resultList; */ return null; } public void evaluateSearchObjects() { SearchDeviceName searchObj = (SearchDeviceName) Component.getInstance("searchDeviceName", ScopeType.CONVERSATION); if ( searchObj != null ) { restrictionValues.add(searchObj.sqlString); restrictionJoinTables.add(searchObj.table); } } void createQuery(){ StringBuilder strBuilder = new StringBuilder(sqlQuery); strBuilder.append(" where "); for ( String str : restrictionValues ){ strBuilder.append(str); } System.out.println("done"); } } </code></pre>
 

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