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You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. +--> + +<html> +<head> + <meta http-equiv="Content-Type" content= + "text/html; charset=us-ascii"> + <meta http-equiv="Content-Style-Type" content="text/css"> + + <title>Tuscany SCA Integration Test Databindings</title> + <!-- LINK rel="stylesheet" href="ait.css" type="text/css" --> + <link rel="stylesheet" href="../../css/base.css" type="text/css"> +</head> + +<body> +<h3>Tuscany SCA Integation Test Databindings </h3> + +<h4>Overview</h4> + +<p> +This integration test tests the Tuscany SCA databinding implementation by passing various data structures +across various bindings using the supported databindings. There are tests for the individual databindings +which exercise various bindings with the same databinding at client and server ends of each binding. There +is also an integration test which exercises the transformer chains by specifying different databindings at +client and server ends of the binding. +</p> +<p> +In doing this testing it is apparent that there is a lot of repetition in creating client, services, idl and +type for each of the data types for each of the bindings for each of the databindings. To reduce the amount +of effort required to maintain the tests as new types, bindings and databindings are added the test cases +themselves are generated from configuration files. +</p> + +<h4>Test Structure</h4> + +Databindings/Common - hold files common across all tests <br/> +Databindings/Interop - test the transformer chains with combinations of databindings<br/> +Databindings/sdogen and jaxbgen - test each databindings independently<br/> + +<h4>Test Generation</h4> +<p> +To reduce the amount of manual effort involved in building and maintaining tests cases the test cases +themselves are generated at run time using a set of velocity templates. Each test module has a generate.xml +file in the resources/generate directory which tells the generator what to do. The file looks like this. +</p> +<img src="config.png"> +<p> +Each <Template> element describes a velocit template to use in the test. The generator process is to expand +each velocity template provided with all of the types specified in the <InputFile> sections. +</p> +<p> +Each <InputFile> element describes a schema file used in the test. It also contains a description of each +data type that will be tested. The generator then arranges for the databinding being tested to generate +appropriate Java classes to represent the type at runtime. The individual databinding tests use the following +flow. +</p> + +Create data object at client<br/> +Client passes data object to server<br/> +Server modifies data object<br/> +Server returns modified data object to client<br/> +Client tests that modified data object is as expected<br/> +<p> +Hence the CreateTypeCode, ModifyTypeCode and ResultComparison elements which contain the type specific code +that is used in the tests. +</p> + +<h4>The Common Directory</h4> +<p> +The common directory contains the information that is common across all of the tests. This includes the +common velocity templates and the source for the generator that reads the config.xml for each test. Common +also contains all of the data type schema as these are common across all tests. Each test pom is written so +that the contents of the common project are expanded into the tests target directory before the test starts. +In this way all of the common elements are available for the test generation phase and at test runtime. +</p> + +<h4>Individual Databinding Tests</h4> +<p> +The individual databinding tests, for example, sdogen and jaxbgen, are mostly empty as their content is +generated at runtime. The configuration and any test specific templates can be found in the resources/generate +directory. Some files are hand crafted for each test and live in their static position in the tests directory +structure. +</p> +<p> +Each test uses the same scenario +</p> +<img src="databinding.png"> +<p> +The interface exposed by the greeter service provides a greet method for each data type being tested, for +example, +</p> +<code> +PersonType greetPersonType(PersonType param);<br/> +AttributeComplexType greetAttributeComplexType(AttributeComplexType param);<br/> +AttributeReferenceComplexType greetAttributeReferenceComplexType(AttributeReferenceComplexType param);<br/> +</code> +<p> +These methods are taken from the SDO databinding test and hence PersonType, AttributeComplexType, etc. will +have been generated by the SDO static type generator. +</p> +<p> +Hence this tests a single databinding across a variety of data types and a variety of bindings. New bindings +be tested by extending the composite. Be datatypes can be tested by updating the confix.xml file. +</p> +<h4>Databinding Interoperability Tests</h4> +<p> +This test uses the generated client, services and types from the individual databinding tests. It does not +regenerate them and you will see a dependency in the interop test pom on the other databinding tests. Is also +has some generate elements because the composite file must currently have import statements for all of the +SDO factories required during tested. +</p> +<p> +The scenario used here is, +</p> +<img src="interop.png"> +<p> +A chain of components is built up for each binding. Each component, drawn from the the inidividual databinding +tests, tests the full range of datatypes. The client components are designed so that they can be chained together +and so tranformations across different databindings is tests. The service component simply changes the data +content and returns it as before. +</p> +<h4>Building And Running The Tests</h4> +<p> +The tests can be built by doing the following. +</p> +<code> +cd sca/itest/databindings <br/> +mvn +</code> +<p> +The only modification to this process is required if a new input file is added to the tests suite. In this +case you will need to edit the config.xml files as appropriate but run mvn twice. This may sound a little +odd but currently the sdo test uses its pom file to generate the require SDO types. As the test is self +generating the pom file will not be updated to include the new type file until the second time it's run. The +aim is at some point to remove this feature from the pom. +</p> + + +</body> +</html> |