private void handlePropertyAction()

in modules/core/src/main/java/org/apache/synapse/config/xml/POJOCommandMediatorFactory.java [111:235]
104 lines of code
33 McCabe index (conditional complexity)

    private void handlePropertyAction(String name, OMElement propElem, POJOCommandMediator m) {

        OMAttribute valueAttr   = propElem.getAttribute(ATT_VALUE);
        OMAttribute exprAttr    = propElem.getAttribute(ATT_EXPRN);
        OMAttribute ctxNameAttr = propElem.getAttribute(ATT_CTXNAME);
        OMAttribute actionAttr  = propElem.getAttribute(ATT_ACTION);

        SynapseXPath xpath = null;
        try {
            if (exprAttr != null) {
                xpath = SynapseXPathFactory.getSynapseXPath(propElem, ATT_EXPRN);
            }
        } catch (JaxenException e) {
            handleException("Error in building the expression as an SynapseXPath" + e);
        }

        // if there is a value attribute there is no action (action is implied as read value)
        if (valueAttr != null) {
            String value = valueAttr.getAttributeValue();
            // all other three attributes can not co-exists
            if (exprAttr != null && ctxNameAttr != null) {
                handleException("Command properties can not contain all three 'value', " +
                    "'expression' and 'context-name' attributes. Only one or " +
                    "combination of two can be there.");
            } else {
                m.addStaticSetterProperty(name, value);
                if (exprAttr != null) {
                    // action ==> ReadValueAndUpdateMesssage
                    m.addMessageGetterProperty(name, xpath);
                } else if (ctxNameAttr != null) {
                    // action ==> ReadValueAndUpdateContext
                    m.addContextGetterProperty(name, ctxNameAttr.getAttributeValue());
                } // else the action ==> ReadValue
            }
        } else if (propElem.getFirstElement() != null) {
            // all other two attributes can not co-exists
            if (exprAttr != null && ctxNameAttr != null) {
                handleException("Command properties can not contain all the " +
                    "'expression' and 'context-name' attributes with a child. Only one " +
                    "attribute of those can co-exists with a child");
            } else {
                m.addStaticSetterProperty(name, propElem.getFirstElement());
                if (exprAttr != null) {
                    // action ==> ReadValueAndUpdateMesssage
                    m.addMessageGetterProperty(name, xpath);
                } else if (ctxNameAttr != null) {
                    // action ==> ReadValueAndUpdateContext
                    m.addContextGetterProperty(name, ctxNameAttr.getAttributeValue());
                } // else the action ==> ReadValue
            }
        } else {
            // if both context-name and expression is there
            if (exprAttr != null && ctxNameAttr != null) {
                if (actionAttr != null && actionAttr.getAttributeValue() != null) {
                    String action = actionAttr.getAttributeValue();
                    if (RM_ACTION.equals(action) || UC_ACTION.equals(action)) {
                        // action ==> ReadMessageAndUpdateContext
                        m.addMessageSetterProperty(name, xpath);
                        m.addContextGetterProperty(name, ctxNameAttr.getAttributeValue());
                    } else if (RC_ACTION.equals(action) || UM_ACTION.equals(action)) {
                        // action ==> ReadContextAndUpdateMessage
                        m.addContextSetterProperty(name, ctxNameAttr.getAttributeValue());
                        m.addMessageGetterProperty(name, xpath);
                    } else {
                        handleException("Invalid action for " +
                            "the command property with the name " + name);
                    }
                } else {
                    handleException("Action attribute " +
                        "is required for the command property with name " + name);
                }
            } else {
                // only one of expression or context-name is present
                if (actionAttr != null && actionAttr.getAttributeValue() != null) {
                    String action = actionAttr.getAttributeValue();
                    if (exprAttr != null) {
                        if (RM_ACTION.equals(action)) {
                            // action ==> ReadMessage
                            m.addMessageSetterProperty(name, xpath);
                        } else if (UM_ACTION.equals(action)) {
                            // action ==> UpdateMessage
                            m.addMessageGetterProperty(name, xpath);
                        } else if (RAUM_ACTION.equals(action)) {
                            // action ==> ReadAndUpdateMessage
                            m.addMessageSetterProperty(name, xpath);
                            m.addMessageGetterProperty(name, xpath);
                        } else {
                            handleException("Invalid action for " +
                                "the command property with the name " + name);
                        }
                    } else if (ctxNameAttr != null) {
                        String ctxName = ctxNameAttr.getAttributeValue();
                        if (RC_ACTION.equals(action)) {
                            // action ==> ReadContext
                            m.addContextSetterProperty(name, ctxName);
                        } else if (UC_ACTION.equals(action)) {
                            // action ==> UpdateContext
                            m.addContextGetterProperty(name, ctxName);
                        } else if (RAUC_ACTION.equals(action)) {
                            // action ==> ReadAndUpdateContext
                            m.addContextSetterProperty(name, ctxName);
                            m.addContextGetterProperty(name, ctxName);
                        } else {
                            handleException("Invalid action for " +
                                "the command property with the name " + name);
                        }
                    } else {
                        handleException("Unrecognized command property with the name " + name);
                    }
                } else {
                    // action ==> ReadAndUpdateMessage/Context
                    if (exprAttr != null) {
                        m.addMessageSetterProperty(name, xpath);
                        m.addMessageGetterProperty(name, xpath);
                    } else if (ctxNameAttr != null) {
                        String ctxName = ctxNameAttr.getAttributeValue();
                        m.addContextSetterProperty(name, ctxName);
                        m.addContextGetterProperty(name, ctxName);
                    } else {
                        handleException("Unrecognized command property with the name " + name);
                    }
                }
            }
        }
    }