Example usage for org.apache.commons.jxpath JXPathContext getContextPointer

Introduction

In this page you can find the example usage for org.apache.commons.jxpath JXPathContext getContextPointer.

Prototype

public abstract Pointer getContextPointer();

Source Link

Document

Returns a Pointer for the context bean.

Usage

From source file:org.xchain.framework.lifecycle.Execution.java

/**
 * <p>Signals that the execute method of a command has been called.  If this command is registered with a catalog, then
 * a new local context is created based on the current context that was passed in.</p>
 *
 * <p>NOTE: This command is used by the engineering framework and should not be called directly by
 * command implementations.</p>/*w w w .  j  a  v  a  2  s .c o m*/
 *
 * @param command the command that is being executed.
 * @param context the current local context or the global context.
 * @return the current local context.  If the command is registered with a catalog, then the context returned is
 * the new local context for this command.  Otherwise, the context returned will be the same as the context passed in.
 */
public static JXPathContext startCommandExecute(Command command, JXPathContext context) {
    JXPathContext localContext = null;

    // push this command onto the stack.
    executionContextStack.push(new CommandExecutionContext(command));

    if (isLocalContextBoundary(command)) {
        // create the new local context.
        localContext = new ScopedJXPathContextImpl(executionContextTl.get(), context.getContextBean(),
                context.getContextPointer(), Scope.chain);

        // push the local context.
        chainContextStack.push(localContext);

        startExecutionTrace(command);
    } else if (!(context instanceof ScopedJXPathContextImpl)) {
        throw new IllegalStateException("Initial call to command that is not registered with a catalog.");
    }

    updateExecutionTraceLocation();

    // get the local context.
    context = getCurrentContext();
    if (command instanceof EngineeredCommand) {
        // Define prefix mappings for engineered commands.
        definePrefixMappings(context, (EngineeredCommand) command);
    }

    // return the context.
    return context;
}

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