[richfaces-issues] [JBoss JIRA] (RF-12661) rich:tooltip causes NPE with null value

[Raimundas Maknys (JIRA)]

Raimundas Maknys created RF-12661:
-------------------------------------

             Summary: rich:tooltip causes NPE with null value
                 Key: RF-12661
                 URL: https://issues.jboss.org/browse/RF-12661
             Project: RichFaces
          Issue Type: Bug
      Security Level: Public (Everyone can see)
          Components: component-output
    Affects Versions: 4.2.2.Final
            Reporter: Raimundas Maknys
            Priority: Minor


rich:tooltip with null value causes NullPointerException:
{code}
Caused by: java.lang.NullPointerException
        at org.richfaces.renderkit.html.TooltipRenderer.encodeContentBegin(TooltipRenderer.java:135)
        at org.richfaces.renderkit.html.TooltipRenderer.doEncodeBegin(TooltipRenderer.java:127)
        at org.richfaces.renderkit.RendererBase.encodeBegin(RendererBase.java:115)
        at javax.faces.component.UIComponentBase.encodeBegin(UIComponentBase.java:585)
        at javax.faces.component.UIComponentBase.encodeAll(UIComponentBase.java:515)
        at org.richfaces.renderkit.RendererBase.renderChildren(RendererBase.java:276)
...........
{code}

Proposed solution:
{code:title=org.richfaces.renderkit.html.TooltipRenderer|borderStyle=solid}
	130    private void encodeContentBegin(ResponseWriter writer, FacesContext context, AbstractTooltip tooltip) throws IOException {
	131        writer.startElement(getMarkupElement(tooltip), tooltip);
	132        writer.writeAttribute(ID_ATTRIBUTE, tooltip.getClientId(context) + ":content", null);
	133        writer.writeAttribute(CLASS_ATTRIBUTE, "rf-tt-cnt", null);
	134        if (tooltip.getChildCount() == 0) {
-	135            writer.write(tooltip.getValue().toString());
+	135            writer.write(tooltip.getValue() != null ? tooltip.getValue().toString() : "");
	136        }
	137    }
{code}

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