### Example of delivering a message

This example demonstrates how to deliver a filter user defined message between two library components. It is divided into the following steps:

1. Create two library components.
2. Define to deliver a filter user defined message between the library components.
3. Publish the library components to JReport Server.
4. Deliver the message in a dashboard.

#### Creating the library components

1. Open the catalog SampleReports.cat.
2. Use the business view SaleStat in Data Source 1 to create two library components and save them as Component 1.lc and Component 2.lc.

   For Component 1, create a table which displays the Order ID, Order Date, Quantity and Unit Price DBFields, is grouped by Assigned Region, and uses Total Actual as the summary field. For Component 2, create a crosstab using Order ID and Assigned Region respectively as the row and column fields, and Total Actual as the summary field. Apply the style Commercial to them.

#### Defining to deliver a filter user defined message

In this step, we will define to send a filter user defined message from Component 1 when the Click event occurs on the Assigned Region group by field in the table, and make Component 2 receive the message and filter on the Assigned Region field once it receives the message.

To define to send a filter user defined message on Component 1:

1. Right-click the group by field Assigned Region and click Send Message > Customize on the shortcut menu to bring out the Send Message dialog.
2. In the Events box, check Click as the trigger event, then click on the event to activate the message options on the right.
3. From the Message drop-down list, select User Defined, then input 1001 and Filter - Assigned Region as the message ID and name.
4. Click to add a message line.
5. Select the <Input> item from the drop-down list in the Key column and input Assigned Region in the text box.
6. Select Current Value from the drop-down list in the Value column. String is displayed automatically in the Data Type column.

   The message is defined as follows:

7. Click OK in the dialog to finish defining the message.

To make Component 2 receive the message and filter the Assigned Region field:

1. Right-click the crosstab and select Receive Message from the drop-down list to display the Receive Message dialog.
2. Click to add a message line.
3. Select the <Input> item from the drop-down list in the Message ID column, then input 1001 in the text box.
4. Input Filter - Assigned Region in the text box of the Message Name column.
5. Click the blank text box in the Actions column, then click that appears.

6. In the Web Action List dialog, select *Filter and click OK to display the Filter dialog.
7. Select Assigned Region from the Filter On drop-down list, keep the default operator, then select <Input> under the Message Key node in the Value drop-down list and input Assigned Region in the text box.

8. Click OK to go back to the Receive Message dialog. The message Component 2 receives is defined as follows:

9. Click the OK button to finish defining the message.

#### Publishing the library components

After defining how to deliver the message, save the two library components. Then, start JReport Server and publish the library components along with the catalog SampleReports.cat to the component library in JReport Server. For detailed steps about publishing resources from JReport Designer to JReport Server, see Publishing resources remotely.

#### Delivering the filter user defined message in a dashboard

When the two library components are inserted into a dashboard, when the Click event occurs on the Assigned Region group by field in the table, the message will be delivered between them, and the records in the crosstab will then be filtered according to the specified condition.

To deliver the message in a dashboard:

1. Open the JReport Console page, select New Report > Dashboard in the Reports tab to create a dashboard.
2. Open the Components panel and browse to the folder where the two library components are published.
3. Drag and drop the two library components to the dashboard.

4. Click the assigned region Asia-Pacific in the table in Component 1 to send out the message, then you can see how the crosstab in Component 2 is filtered after it receives the message.

5. Turn to Page 7 and click Europe, Middle East, Africa in the table, then you can see the records about this assigned region is displayed in the crosstab.

6. You can also click other assigned regions to see the records about each assigned region.