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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<html><head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1"><meta http-equiv="Content-Style-Type" content="text/css"><title>Tuscany
Calculator-Combo Sample</title><!-- LINK rel="stylesheet" href="ait.css" type="text/css" --><!-- maven -->
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@import url("../../../../css/maven-base.css");
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@import url("../../../../css/site.css");
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<body>
<H3>Tuscany Calculator-Combo - A Simple SCA Assembly involving Java,
JavaScript, Ruby, RMI and WebServices</H3>
<H3>Overview</H3>
<TABLE border="0">
<TBODY>
<TR>
<TD width="100%" valign="top" align="left"> The objective of this sample is to provide simple demonstration of an SCA application assembly involving different implementation and binding technlogies. <BR>This sample is an SCA Standalone Calculator Application called "Calculator Combo" assembling Calculator functions implemented in Java, JavaScript and Ruby and references to the external RMI and WebService implementations of the Calculator funtions. Besides, this assembly also includes a component that is implemented as a Composite and there is also a simple demonstration of property configuration of components.
<BR>
<BR>This sample depends on two other samples which are :-
<BR>
i) The CalculatorRmiService SCA Standalone Assembly which assembles Calculator functions implemented in Java and exposing the Calculator as RMI Services<BR>
ii) The Calculator WebService that assembles Calculator functions implemented in Java and exposing them as WebServices
</TD>
</TR>
</TBODY>
</TABLE>
<H3>Location</H3>
<P>The source for this sample is located in the paths - <I>samples\standalone\calculator-combo</I>
of the source
distribution.<BR>
<BR>
If there is binary distribution available for these samples, then you may find these samples packaged as <I>sample-calculator-combo.jar.</I></P>
<H3>Building & Running the Calculator-Combo Sample Source</H3>
<P>If you are working with a source distribution, then you must first
build the source of this sample. <BR>
- Ensure that you have Java 5 installed on your system.<BR>
- Next, you must have Maven 2.0.4 installed on your system. Look up
http://maven.apache.org/download.html for downloading and installing
Maven.</P>
<H4>Building the Calculator-Combo Sample</H4>
<TABLE border="0">
<TBODY>
<TR>
<TD valign="top"></TD>
<TD valign="top">Having installed Maven, open a command line console
and switch over to the directory on your local system, where you have
extracted the source.<BR>
- Now switch futher into the subdirectory <I>samples\standalone\calcualtor-combo.
</I>Within this directory execute the following command
<TABLE border="0">
<TBODY>
<TR>
<TD><FONT color="purple">></FONT></TD>
<TD><FONT color="purple" face="Courier New">mvn</FONT></TD>
</TR>
</TBODY>
</TABLE>
This will build the <I>calculator-combo</I> sample, package a JAR
file for the composite and make it available in the sub-directory <I>samples\standalone\calculator-combo/target</I></TD>
<TD></TD>
</TR>
</TBODY>
</TABLE>
<H4><BR>
Setting up Tuscany Standalone Runtime </H4>
<P>To run these samples you need the Tuscany Standalone Runtime. This is
available as a distribution that can be conveniently unpacked and setup
in the samples directory itself. For this, do the following: -</P>
<TABLE border="0">
<TBODY>
<TR>
<TD valign="top" align="right">i)</TD>
<TD>From the directory <I>samples\standalone\calculator-combo</I>
execute the following command
<TABLE border="0">
<TBODY>
<TR>
<TD><FONT color="purple">></FONT></TD>
<TD><FONT color="purple" face="Courier New">mvn dependency:unpack</FONT></TD>
</TR>
</TBODY>
</TABLE>
This will unpack the Tuscany Standalone Runtime Distribution to the <I>target\distribution
</I>sub-directory within the present working directory - <I>samples\standalone\calculator-combo</I></TD>
</TR>
<TR>
<TD valign="top">ii)</TD>
<TD>This sample would require the following extensions of Tuscany : -<BR>RMI Binding Extension, JavaSCript Container Extension, Axis2 Binding Extension, Ruby Container Extension. <BR>The jar files of all of these extensions have to copied from the the <I>contrib </I>sub-directory
into the <I>extensions </I>directory of the distribution. ie. execute
the following from the <I>samples\standalone\calculator-combo </I>sub-directory:
-
<TABLE>
<TBODY>
<TR>
<TD valign="top"><FONT color="purple">></FONT></TD>
<TD><FONT color="purple" face="Courier New">copy
target\distribution\contrib\rmi-1.0-incubator-M2.jar <FONT
color="purple" face="Courier New">target\distribution\extensions\rmi-1.0-incubator-M2.jar</FONT></FONT></TD>
</TR>
<TR>
<TD valign="top"><FONT color="purple">></FONT></TD><TD><FONT color="purple" face="Courier New">copy
target\distribution\contrib\axis2-1.0-incubator-M2.jar <FONT color="purple" face="Courier New">target\distribution\extensions\axis2-1.0-incubator-M2.jar</FONT></FONT></TD>
</TR>
<TR>
<TD valign="top"><FONT color="purple">></FONT></TD><TD><FONT color="purple" face="Courier New">copy
target\distribution\contrib\javascript-1.0-incubator-M2.jar <FONT color="purple" face="Courier New">target\distribution\extensions\javascript-1.0-incubator-M2.jar</FONT></FONT></TD>
</TR>
<TR>
<TD valign="top"><FONT color="purple">></FONT></TD><TD><FONT color="purple" face="Courier New">copy
target\distribution\contrib\ruby-1.0-incubator-M2.jar <FONT color="purple" face="Courier New">target\distribution\extensions\ruby-1.0-incubator-M2.jar</FONT></FONT></TD>
</TR>
<TR>
<TD valign="top"><FONT color="purple">></FONT></TD>
<TD><FONT color="purple" face="Courier New">copy
target\distribution\contrib\databinding-sdo-1.0-incubator-M2.jar <FONT
color="purple" face="Courier New">target\distribution\extensions\databinding-sdo-1.0-incubator-M2.jar</FONT></FONT></TD>
</TR>
</TBODY>
</TABLE>
<I>Note</I> : <I>If you are working with SNAPSHOTs versions of
Tuscany Extensions then the files in the above commands must be substituted with the corresponding SNAPSHOT versions. For example <B>rmi-1.0-incubator-M2.jar</B> in
the above command must be substituted with <B>rmi-1.0-incubator-M2-SNAPSHOT.jar</B></I></TD>
</TR>
</TBODY>
</TABLE>
<H4>Running the Calculator-Combo Sample
</H4>
<P>Now that the sample source has been built and the Tuscany Standalone
Runtime setup, you may run the Calculator-Combo sample as follows: -</P>
<TABLE border="0">
<TBODY>
<TR>
<TD valign="top">i)</TD>
<TD>Ensure that the Calculator-RMIService Sample and the Calculator WebService samples are running. You can find them under <I>samples\standalone\calcualtorRMIService </I>and <I>samples\webapp\calcualtorws</I> directories of the samples source distribution respectively. Details pertaining to building and running these samples can be found in the respective readme.html files under each of them.</TD>
</TR>
<TR>
<TD valign="top">ii)</TD><TD>Switch to the <I>samples\standalone\calculator-combo\target\distribution
</I>sub-directory and execute the following command:
<TABLE>
<TBODY>
<TR>
<TD><FONT color="purple">></FONT></TD>
<TD><FONT color="purple" face="Courier New">java -jar
bin\launcher.jar ..\sample-calculator-combo.jar</FONT></TD>
</TR>
</TBODY>
</TABLE>
</TD>
</TR>
<TR>
<TD valign="top">iii)</TD>
<TD>You will initially observe messages that relate to resolution of
dependencies required to run this sample and finlly see the following
message on your console<BR>
<FONT color="green" face="Courier New"></FONT><FONT
face="Courier New" color="green" size="+0">***************************************<BR>
Starting the Calculator Combo sample!!!<BR>
***************************************<BR>
Invoking Java Implementation ...<BR>
3 + 2 = 5.0<BR>
Invoking Ruby Implementation ...<BR>
3 - 2 = 1.0<BR>
Invoking over RMI Reference...<BR>
3 * 2 = 6.0<BR>
Invoking WebService Implementation ...<BR>
3 / 2 = 1.5<BR>
Invoking Scientific Calculator Composite Implementation ...<BR>
.....Invoking Java Implementation ...<BR>
.....Average of 1,2,3,4,5,6,7,8,9 = 5.0<BR>
.....Invoking JavaScript Implementation ...<BR>
.....Square Root of 81 = 9.0<BR>
.....Invoking Java Implementation configued for Property ...<BR>
.....Sine 90 Degrees = 1.0<BR>
.....Cos 90 Degrees = 6.123233995736766E-17<BR>
.....Tan 90 Degrees = 1.633123935319537E16</FONT><FONT color="green"></FONT></TD>
</TR>
</TBODY>
</TABLE>
<P>Thus we see the Calculator Combo demonstrating the assembly of different technologies to provide a wholesome Calculator Service to the external world.<BR>
</P><H2>Code Overview</H2>
<P>The source files are physically organized as shown below:<BR>
</P>
<table style="text-align: left; width: 100%;" border="1" cellpadding="2" cellspacing="2"><tbody><tr><td>
<pre>
<B><U></U></B><B><U>Calculator Combo</U></B>
+---main<BR> +---java<BR> | +---calculator
<I> <Interfaces and Implementations for Calculator Functions>
</I> +---client
CalculatorClient.java
+---resources
+---wsdl
calculator.wsdl
+---webapp
+---WEB-INF
default.scdl
web.xml</pre></td></tr></tbody></table>
<P><B> <BR>
</B></P>
<P><B>Calculator Combo Sample (Standalone Deployment)</B></P><TABLE border="1">
<TBODY>
<TR>
<TD width="230" valign="top">default.scdl</TD>
<TD width="396" valign="top">- Defines an assembly of calculator
functions implemented in Java and exposed as a WebService using the
Axis2 binding.<BR>- Defines a SciCalculatorComponent that is implemented by an SCA Composite defined in sci_calc.scdl </TD>
</TR>
<TR>
<TD width="230" valign="top">sci_calc.scdl</TD>
<TD width="396" valign="top">- Defines an assembley of advanced calculator functions implemented in Java<BR>- Uses a property configuration called 'trig-metric' that configures the metric that is used when invoking trignometric functions (sin, cos, tan)</TD>
</TR>
<TR>
<TD width="230">AddService.java<BR>
AddServiceImpl.java<BR>
DivideService.java<BR>MathService.java<BR>
MathServiceImpl.java<BR>
MultiplyService.java<BR>
MultiplyServiceImpl.java<BR>
SubtractService.java<BR>
SubtractServiceImpl.java</TD>
<TD width="396">Java Interfaces and Java Implementations for various calculator
functions. <I>
</I></TD>
</TR>
<TR>
<TD width="230">CalculatorService.java<BR>
CalculatorServiceImpl.java</TD>
<TD width="396">- Defines the coarse grained Calculator Interface and
Implementation. This calculator implementation delegates function
requests to other granular implemenations listed above. <BR>- Holds a reference to the RMI Calculator Service which is invoked to provide the 'multiply' function</TD>
</TR>
<TR>
<TD width="230">DivideServiceImpl.java</TD>
<TD width="396">- Provides an implementation for the DivideService and is called by the CalculatorService to provide the 'divide' function<BR>- Holds a reference to the Calculator WebService which is invoked to provide the 'divide' function.</TD>
</TR>
<TR>
<TD width="230">SciCalculatorService<BR>SciCalculatorService
</TD>
<TD width="396">Java Interface and Implementation for advanced functions of the calculator (avg, sqrt, sin, cos, tan, ...)</TD>
</TR>
<TR>
<TD width="230">SqrtService.java</TD>
<TD width="396">Provides an interface defintion for the JavaScript ComponentType definition of the square-root service</TD>
</TR>
<TR>
<TD width="230">calculator.wsdl</TD>
<TD width="396">- Defines the Calculator service using WSDL to enable
the CalculatorServiceImpl to be exposed as a Axis2 WebService<BR>- This wsdl is required to establish the client binding to the Calculator WebService
</TD>
</TR>
<TR>
<TD width="230">Sqrt.componentType</TD>
<TD width="396">Provides the component type information (component type sidefile) for the JavaScript implementation of the Square-Root service</TD>
</TR>
<TR>
<TD width="230">Sqrt.js</TD>
<TD width="396">A JavaScript implementation for the square-root function</TD>
</TR>
<TR>
<TD width="230">SubtractImpl.componentType</TD>
<TD width="396">Provides the component type information (component type sidefile) for the Ruby implementation of the Subtract service</TD>
</TR>
<TR>
<TD width="230">SubtractImpl.rb</TD>
<TD width="396">A Ruby implementation for the Subtract function</TD>
</TR>
</TBODY>
</TABLE>
<P><B></B></P>
</body></html>
|
