For many reporting softwares, in order to accelerate operation speed, inputted decimal fractions will be set as double precision by default. However, in real business of web report, users sometimes need high precision computation of decimal fractions.

For example, in a financial report, when computing (5588.4 + 288.4)* 0.7, if we input “(5588.4 + 288.4)* 0.7″ in the cell, the operation result of the reporting tool is 4113.75999, while the precise result is 4113.76.

How to solve it?

Solution

RAQ Report is a professional Java Web-based reporting tool. With the function decimal() of RAQ Report, it’s very easy to solve the problem. Users just need to write the expression: (decimal(’5588.4′) +decimal(’288.4′))* decimal(’0.7′) in the cell. Then, users can get the precise result.

Source: Knowledge Base of Web Reporting Tool
Original Post: Implement high precision computation in Java reporting tool — RAQ Report
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In web-based input report, users sometimes need to change data source dynamically. For example, in a web report, inputted data often need to be saved to different databases according to end users’ different options.

Then, how to achieve it?

Solution

RAQ Report is a professional Web-based Java reporting tool, and it can help users to make report easily.

As a real Excel-like reporting tool, RAQ Report provides a wonderful solution to change data source dynamically while updating web report. With RAQ Report, users only need to call RAQ Report API. Then, data sources will be dynamically changed when it’s runing.

ReportDefine rd = (ReportDefine)ReportUtils.read(raq);
INormalCell cell = rd.getCell(2, (short)1);
InputProperty ip = cell.getInputProperty();
ArrayList al = ip.getUpdateList();
UpdateProperty up = (UpdateProperty)al.get(0);
// Get the corresponding relation
Object relations = up.getRelation();
if(relations instanceof com.runqian.report4.usermodel.input.TableRelations){
TableRelations trs = (TableRelations)relations;
System.out.println(trs.getDataSourceName());
trs.setDataSourceName(”northwind”);
up.setRelation(trs);
ArrayList ups = new ArrayList(1);
ups.add(up);
ip.setUpdateList(ups);
cell.setInputProperty(ip);

Source: Knowledge Base of RAQ Report
Original Post: Change data source dynamically while updating RAQ web input report
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Common reporting tools can only display the data in database, but can’t solve the problem of submitting data to database. As a professional web reporting tool, RAQ Report provides powerful data input function for report developers. With it, users can not only get data from database, but also submit data to database.

The data input interface of a web report made with RAQ Report is shown below:

In a practical project, there are many requirements for data input report.

First, it should provide a friendly input mode for users to input data fast and avoid mistake.

Second, it should provide automatic computation to simplify data input. For example, after users input unit price and quantity, the report should generate total price automatically.

Third, before saving data, it should provide validity check to avoid illegal input.

According to these special requirements, RAQ Report provides many useful functions for users.

Friendly input modes: Drop-down Tree, Drop-down Calendar, Drop-down Dataset, Correlation Filtering/Dynamic Filtering

Moreover, RAQ Report’s data input report has many display modes. Such as Grid input, row input and free input, etc. For specific operations, please refer to RAQ Report’s Input Report Tutorial.

Page breaking according to paper size

Select “According to paper size” as page break mode in report properties dialog box. Then, the report will be displayed and printed according to paper size. As shown below:

In report IDE, the dotted lines are paper boundaries. The report will page break when it exceed paper size in design or release.

Page breaking according to row number

Set report to display and print fixed number of rows. The setting interface is shown below:

Then, report preview is shown below:

Then, we can see that only 10 rows is displayed on one piece of paper.

Forcible page breaking

Forcible page breaking is similar to the page break character in Word and the separating character in Excel. With setting page break after row or column, report are forced to page break after a row or column. With this mode, developers can realize grouping page break, or some special page break effects.

The design interface is shown below:

Previews of report with grouping page break are shown below:

From the two pictures above, we can see that the effect of grouping page break is realized, so each piece of paper only display one region group.

Display effects of all charts are shown below (All the colors in charts can be defined by developers):

Column

This column chart displays the stocks of different products in different regions. Moreover, the prewarning line has a warning effect to users. With column chart, data is displayed specific and clearly, and users can compare data conveniently.

3D Column

This 3D column chart stereoscopically displays the stocks of different products in different regions from 3 dimensions, region, product, and stocks. With 3D column chart, data is displayed more specific and clearly, and users can compare data conveniently.

3D Cluster Column

This 3D cluster column chart stereoscopically displays the stocks of different products in different regions from 3 dimensions, region, product, and stocks. Moreover, the prewarning line has a warning effect to users. With 3D cluster column chart, data is displayed more specific and clearly, and users can compare data conveniently.

Stack Column

This stack column chart displays the number of staffs with different titles and educations from 3 dimensions, title, education, and number. It tells the number of staff with different titles. With stack chart, data is displayed more specific and clearly, and users can compare data conveniently.

3D Stack Column

This 3D stack column chart stereoscopically displays the number of staffs with different titles and educations from 3 dimensions, title, education, and number. It tells the number of staff with different titles. With 3D stack column chart, data is displayed more specific and clearly, and users can compare data conveniently.

Pie

This pie chart display the staff numbers with different titles from two dimensions, title and number. Moreover, it can display data with percentage mode. With pie chart, data is displayed specific and clearly, and users can compare data conveniently.

3D Pie

This 3D pie chart stereoscopically displays the number of staffs with different titles from two dimensions, title and number. Moreover, it can display data with percentage mode. With 3D pie chart, data is displayed specific and clearly, and users can compare data conveniently.

Multi-level 3D Pie

This multi-level 3D pie chart displays the stocks of products in different regions. In this 3D pie chart, a circle means a series. With multi-series, it can display the stocks of different products in different regions objectively, and help users to compare data.

Line

This line chart display the number of orders and freights with lines.

Area

This area chart displays data in a polygon mode, and the convex pentagonum is the occupying area of data. It displays the number of staffs with different titles from two dimensions, title and number. With area chart, data is displayed specific and clearly, and users can compare data conveniently.

3D Area

This 3D area chart displays in a 3D polygon mode, and the 3D convex pentagonum is the area of data. It displays the number of staffs with different titles. With 3D area chart, data is displayed specific and clearly, and users can compare data conveniently.

Bar

This is a bar chart with parameter template. It displays the number of staffs with different titles. Moreover, it allows users to input parameter for inquiry with drop-down box. Then, the bar chart will change according to inputted parameter.

3D Cluster Bar

This 3D bar chart displays the number of staffs with different titles and educations from three dimensions, title, education and number. With 3D bar chart, data is displayed specific and clearly, and users can compare data conveniently.

Scatter

In this scatter chart, the stocks of the product in different regions are displayed with scatter dots.

The data input interface of a web report made with RAQ Report is shown below:

In a practical project, there are many requirements for data input report.

First, it should provide a friendly input mode for users to input data fast and avoid mistake.

Second, it should provide automatic computation to simplify data input. For example, after users input unit price and quantity, the report should generate total price automatically.

Third, before saving data, it should provide validity check to avoid illegal input.

According to these special requirements, RAQ Report provides many useful functions for users.

Friendly input modes: Drop-down Tree, Drop-down Calendar, Drop-down Dataset, Correlation Filtering/Dynamic Filtering

Moreover, RAQ Report’s data input report has many display modes. Such as Grid input, row input and free input, etc. For specific operations, please refer to RAQ Report’s Input Report Tutorial.

RAQ Report Free Edition supports multiple data sets in report properties.

The functions about multiple data sets in these two editions are different. Many users of Free Edition don’t know how to use the multiple data sets function, and we will introduce the using method of this function.

In RAQ Report Free Edition, this function is called multiple data sets in report properties. It means that other data sets can be used in report properties.

Next, we will explain this concept with an example.

Example

Step 1: Use the database demo of RAQ Report to make dataset ds1 for order report.

The SQL statements is “SELECT Order.OrderID,Order.EmployeeID,Order.CustomerID FROM Order”. Then, corresponding grid report is generated as shown below:

We can see that we only get employee IDs and customer IDs in order report, but we need to know the names of employees and customers. Therefore, we need to get the names from employee table and customer table. Then, we will use multiple data sets.

Next, we will display the content of 3 data tables in the report, and change the IDs of employees and customers to names in next 2 steps. They are are very important, and please pay more attentions to them.

Step 2: Add two datasets ds2 and ds3 from employee table and customer table.

The SQL statement of ds2 is “SELECT Customer.CustomerID,Customer.COMName FROM Customer”.

The SQL statement of ds3 is “SELECT Employee.Employee ID,Employee.EMPName FROM Employee”..

Now, there are 3 datasets as shown below:

Next, we will learn to use multiple datasets in report properties. This is the most important step, and it is all done in the properties bar.

In RAQ Report, cell has two values, actual value and display value. In the example above, employee IDs and custom IDs are actual values. After correlating them with display values, they will display employee names and customer names.

Step 3: Select cell B2, and set the display value of employee ID by writing the display value expression as “ds3.select1(EMPName,EmployeeID==value())”. Then, select cell C2, and set the display value of customer ID by writing the display value expression as “ds2.select1(COMName,CustomerID==value())”. As shown below:

Then, the report preview is shown below:

Now, employee names and customer names are displayed in the report. After changing employee IDs and customer IDs to employee names and customer names in the report header, a report with multiple datasets is made with RAQ Report.

P.S.: RAQ Report Free Edition can only use multiple data sets in report properties, so it is called independent multiple data sets in report properties.

RAQ Report Development Edition can use multiple data sets in report cells directly, and it is more allsided correlative multiple data sources.

Single-Table Main-Sub Report

The characteristic of Single-Table Main-Sub Report is that it uses a single report to realize the business logic of a main-sub report. An example is shown below:

Embedded Main-Sub Report

The characteristic of Embedded Main-Sub Report is that it embeds sub reports in cells. Moreover, the gridlines of the sub report and the main report may be not aligned, and so may the gridlines between the sub reports. For sub report is embedded in main report as an independent report, it is called Embedded Main-Sub Report. An example is shown below:

Imported Main-Sub Report

The characteristic of Imported Main-Sub Report is that the cells of main report will expand in two directions simultaneously according to the number of rows and columns of the sub report. The main report will expand the same number of rows and columns according to the sub report. The sub report occupies the blank rows and columns of the main report, and the gridlines are aligned strictly. After expanding, the sub report forms a uniform two dimension rectangle cell with the main report. An example is shown below:

With these 3 kinds of main-sub report, web report developers can select the appropriate kind according to practical conditions.

In RAQ Report, parameter template is classified into two kinds, Fixed Parameter and Dynamic Parameter.

Fixed Parameter

Inquire according to the actual value of parameter. An example is shown below:

Dynamic Parameter

The parameter can be an expression. When users input an parameter, it can get a new value after computation, and use it for inquiry. An example is shown below:

In the example above, when users input a date, it will inquire the records in this date’s week after dynamic parameter computation.

In RAQ Report, Macro is a string identifier without data type. Before running a report, system will search all the expressions in the report thoroughly and exchange all the macros to macro values.

The Macro in RAQ Report is classified into two kinds, Common Macro and Dynamic Macro.

Common Macro

With Common Macro, users can realize dynamic expression replacement in report. According to different inputted macro values, users can get different reports. With this wonderful function, developers can make different reports according to different conditions, and the workload is decreased greatly.

An example is shown below. When users input Bonus/Salary as macro value, the report displays bonus/salary.

Dynamic Macro

The main difference between Dynamic Macro and Common Macro is that Common Macro transmits macro values to report expressions directly, while Dynamic Macro computes inputted macro values as expressions, and transmits the result to report expressions.

An example is shown below:

Select macro value (Quantity) in FieldName, and select macro computation mode (Sum) in Summary. Then, after clicking Inquiry, the computed macro value will be displayed in the report (Summary of field: 1270.00).

The examples above are only two display modes of RAQ Report’s Common Macro and Dynamic Macro. In practical project, users can set desired display mode freely.