diff options
| author | coreyg <coreyg@13f79535-47bb-0310-9956-ffa450edef68> | 2014-11-21 09:30:19 +0000 |
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| committer | coreyg <coreyg@13f79535-47bb-0310-9956-ffa450edef68> | 2014-11-21 09:30:19 +0000 |
| commit | 200a40b332420f94992eb39a6d0ea1cf1490ffc4 (patch) | |
| tree | 1c76ef1d254c7bfc91128a313d319bd60da9d01e /site/trunk/site-publish/workingwithnamemapping.html | |
| parent | 85f53ab6ab4f664d63774c94b672a875c9e52b8a (diff) | |
Adding tuscany's website to their svn repo for svnpubsub
git-svn-id: http://svn.us.apache.org/repos/asf/tuscany@1640879 13f79535-47bb-0310-9956-ffa450edef68
Diffstat (limited to 'site/trunk/site-publish/workingwithnamemapping.html')
| -rw-r--r-- | site/trunk/site-publish/workingwithnamemapping.html | 147 |
1 files changed, 147 insertions, 0 deletions
diff --git a/site/trunk/site-publish/workingwithnamemapping.html b/site/trunk/site-publish/workingwithnamemapping.html new file mode 100644 index 0000000000..3bff19ee29 --- /dev/null +++ b/site/trunk/site-publish/workingwithnamemapping.html @@ -0,0 +1,147 @@ + +<!-- + + Licensed to the Apache Software Foundation (ASF) under one or more + contributor license agreements. See the NOTICE file distributed with + this work for additional information regarding copyright ownership. + The ASF licenses this file to You under the Apache License, Version 2.0 + (the "License"); you may not use this file except in compliance with + the License. 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. +--> + + +<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> +<HTML> + <HEAD> + <!-- generateKeywords macro --> + <META name="description" content="Apache Tuscany"> + <META name="keywords" content="apache, apache tuscany, tuscany, service, services, fabric, soa, service oriented architecture, sca, service component architecture, das, sdo, csa, ruby, opensource"> + <!-- generateKeywords macro end --> + + <LINK type="text/css" rel="stylesheet" href="http://tuscany.apache.org/stylesheets/default.css"> + <LINK rel="SHORTCUT ICON" href="https://cwiki.apache.org/confluence/display/TUSCANY/$images/favicon.ico"> + <TITLE>Apache Tuscany : WorkingWithNameMapping</TITLE> + <META http-equiv="Content-Type" content="text/html;charset=UTF-8"></HEAD> + + <BODY onload="init()"> + <!-- topNav macro --> + <TABLE valign="top" border="0" cellspacing="0" cellpadding="0" width="100%" background="http://tuscany.apache.org/images/TuscanyLogoNEW_Text_120px_bg.jpg"> + <TR> + <TD valing="top" align="left"> + <A href="https://cwiki.apache.org/confluence/pages/viewpage.action?spaceKey=TUSCANY&title=$siteroot"><IMG src="http://tuscany.apache.org/images/TuscanyLogoNEW_Text_120px_bg.jpg" height="91" width="25" border="0"></A> + </TD> + <TD> + <A href="http://tuscany.apache.org/"><IMG src="http://tuscany.apache.org/images/TuscanyLogo.jpg" border="0"></A> + </TD> + + <TD width="100%"> + + </TD> + + <!-- Adds the edit page link to the top banner--> + <TD valign="bottom"> + <DIV style="padding: 2px 10px; margin: 0px;"> + <A href="https://cwiki.apache.org/confluence/pages/editpage.action?pageId=52839"> + <IMG src="http://tuscany.apache.org/images/notep_16.gif" height="16" width="16" border="0" align="absmiddle" title="Edit Page"></A> + </DIV> + </TD> + + </TR> + </TABLE> + <!-- topNav macro end --> + + <!-- breadCrumbs macro --> + <TABLE border="0" cellpadding="2" cellspacing="0" width="100%"> + <TR class="topBar"> + <TD align="left" valign="middle" class="topBarDiv" nowrap="true" width="100%"> + <A href="home.html" title="Apache Tuscany">Apache Tuscany</A> > <A href="home.html" title="Home">Home</A> > <A href="das-overview.html" title="DAS Overview">DAS Overview</A> > <A href="das-java.html" title="DAS Java">DAS Java</A> > <A href="das-java-documentation-menu.html" title="DAS Java Documentation Menu">DAS Java Documentation Menu</A> > <A href="das-java-developer-guide.html" title="DAS Java Developer Guide">DAS Java Developer Guide</A> > <A href="rdb-das-java.html" title="RDB DAS Java">RDB DAS Java</A> > <A href="rdb-das-user-guide.html" title="RDB DAS - User Guide">RDB DAS - User Guide</A> > <A href="" title="WorkingWithNameMapping">WorkingWithNameMapping</A> + </TD> + + <TD align="right" valign="middle" class="topBarDiv" align="left" nowrap="true"> + <A href="http://mail-archives.apache.org/mod_mbox/tuscany-user">User List</A> | <A href="http://mail-archives.apache.org/mod_mbox/tuscany-dev">Dev List</A> | <A href="http://issues.apache.org/jira/browse/Tuscany">Issue Tracker</A> + </TD> + </TR> + </TABLE> + <!-- breadCrumbs macro end --> + + + <TABLE border="0" cellpadding="0" width="100%" bgcolor="#FFFFFF"> + <TR> + <TD align="left" valign="top"> + + <!-- pageContent macro --> + <DIV id="PageContent"> + + <DIV class="pagecontent"> + <DIV class="wiki-content"> + <H1><A name="WorkingWithNameMapping-WorkingWithNameMapping"></A>WorkingWithNameMapping</H1> + +<P>The default behavior for the RDB DAS is to map database names to SDO names. So, if a CUTSOMER table is read from the database then each row will be represented as a CUSTOMER DataObject. Likewise, if the CUSTOMER tabel has columns (ID, LASTNAME, ADDRESS) then CUSTOMER DataObject instances will have properties (ID, LASTNAME, ADDRESS). Database Table names map to DataObject Type names and database column names map to DataObject property names.</P> + +<P>This implicit mapping of database and SDO names woks well but some developers will want explicit name mapping that allows the database and SDO names to vary. One typical example is that the database might have all tables and columns conventionally named in all upercase but a Java developer might want to work with SDO Types and properties that are camelcased. So, database names CUSTOMER and LASTNAME might map to SDO names Customer and lastName.</P> + +<P>The RDB DAS allows this type of explicit mapping via configuration (usually in the form of a XML config file). The following example illstrates the use of this feature:</P> +<DIV class="code panel" style="border-width: 1px;"><DIV class="codeContent panelContent"> +<PRE class="code-java">DAS das = DAS.FACTORY.createDAS(getConfig(<SPAN class="code-quote">"BooksConfigWithAlias.xml"</SPAN>), getConnection()); + + Command select = das.getCommand(<SPAN class="code-quote">"get book by ID"</SPAN>); + select.setParameter(1, <SPAN class="code-object">Integer</SPAN>.valueOf(1)); + + DataObject root = select.executeQuery(); + <SPAN class="code-object">String</SPAN> author = root.getString(<SPAN class="code-quote">"Book[1]/Writer"</SPAN>)); +</PRE> +</DIV></DIV> +<P>Here is the associated configuration file:</P> +<DIV class="preformatted panel" style="border-width: 1px;"><DIV class="preformattedContent panelContent"> +<PRE><Config xsi:noNamespaceSchemaLocation="http:///org.apache.tuscany.das.rdb/config.xsd" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"> + + <Command name="get all books" SQL="SELECT * FROM BOOK" kind="Select"/> + + <Command name="get Cat in the Hat" SQL="SELECT * FROM BOOK WHERE NAME = 'Cat in the Hat'" kind="Select"/> + + <Command name="get book by ID" SQL="SELECT * FROM BOOK WHERE BOOK.BOOK_ID = ?" kind="Select"/> + + <Table tableName="BOOK" typeName="Book"> + <Column columnName="BOOK_ID" primaryKey="true"/> + <Column columnName="AUTHOR" propertyName="Writer"/> + <Column columnName="OCC" collision="true"/> + </Table + </Config> +</PRE> +</DIV></DIV> +<P>You can see that the Table definition provides "typeName" and "propertyName" attributes to override the defualt use of the all-uppercase database names. You can also see the use of these names in the example Java source. </P> + </DIV> + </DIV> + </DIV> + <!-- pageContent macro end --> + + </TD> + </TR> + </TABLE> + + <!-- footer macro --> + <SCRIPT src="http://www.google-analytics.com/urchin.js" type="text/javascript"> + </SCRIPT> + <SCRIPT type="text/javascript"> + _uacct = "UA-1174707-5"; + urchinTracker(); + </SCRIPT> + + <A href="http://www.statcounter.com/" target="_blank"><IMG src="http://c26.statcounter.com/counter.php?sc_project=2619156&java=0&security=94bd7e7d&invisible=0" alt="website stats" border="0"></A> + + <DIV class="footer"> + Copyright � 2003-2012, The Apache Software Foundation </BR> + Apache Tuscany and the Apache Tuscany project logo are trademarks of The Apache Software Foundation. + </DIV> + <!-- footer macro end --> + + </BODY> +</HTML> |