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<!-- Generated by javadoc on Fri Sep 24 03:23:03 CEST 1999 -->
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<title>
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Class de.tudarmstadt.ito.xmldbms.LinkInfo
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<body>
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<a name="_top_"></a>
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<pre>
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<a href="packages.html">All Packages</a> <a href="tree.html">Class Hierarchy</a> <a href="Package-de.tudarmstadt.ito.xmldbms.html">This Package</a> <a href="de.tudarmstadt.ito.xmldbms.DocumentInfo.html#_top_">Previous</a> <a href="de.tudarmstadt.ito.xmldbms.Map.html#_top_">Next</a> <a href="AllNames.html">Index</a></pre>
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<hr>
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<h1>
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Class de.tudarmstadt.ito.xmldbms.LinkInfo
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</h1>
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<pre>
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java.lang.Object
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+----de.tudarmstadt.ito.xmldbms.LinkInfo
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</pre>
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<hr>
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<dl>
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<dt> public class <b>LinkInfo</b>
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<dt> extends Object
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</dl>
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Provides information needed to link two tables;
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<A HREF="../readme.html#NotForUse">not for general use</A>.
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<P>LinkInfo contains contains the information needed to link two tables:
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the columns in each key, whether to generate the key, and which key appears
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in which table. LinkInfo structures occur in RelatedClassMaps and
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PropertyMaps to link the class table to the related class table or property
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table. They also occur in RootClassMaps, where only the child key information
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is used.</P>
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<P>"Parent" and "child" refer to the relationship between
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the structures in the XML document, not the relationship between two tables
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in the database. In a class / property relationship, such as between an
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element type-as-class and an element type-as-property, PCDATA, or attribute,
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the class is always the parent. In a class / class relationship, such as
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that between two element types-as-classes and mapped by a ClassMap and its
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subordinate RelatedClassMaps, the class referred to in the ClassMap is
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always the parent and the class referred to in the RelatedClassMap is always
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the child.</P>
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<P>Note that the parent / child relationship is independent of where the
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candidate key is located. That is, it could be in the table of the parent
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or the child. Which table it is in is stated by the parentKeyIsCandidate
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member variable.</P>
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<p>
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<hr>
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<a name="index"></a>
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<h2>
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<img src="images/variable-index.gif" width=207 height=38 alt="Variable Index">
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</h2>
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<dl>
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<dt> <img src="images/magenta-ball-small.gif" width=6 height=6 alt=" o ">
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<a href="#childKey"><b>childKey</b></a>
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<dd> Columns in the child key.
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<dt> <img src="images/magenta-ball-small.gif" width=6 height=6 alt=" o ">
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<a href="#generateKey"><b>generateKey</b></a>
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<dd> Whether the candidate key is to be generated.
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<dt> <img src="images/magenta-ball-small.gif" width=6 height=6 alt=" o ">
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<a href="#parentKey"><b>parentKey</b></a>
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<dd> Columns in the parent key.
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<dt> <img src="images/magenta-ball-small.gif" width=6 height=6 alt=" o ">
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<a href="#parentKeyIsCandidate"><b>parentKeyIsCandidate</b></a>
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<dd> Whether the parent key is the candidate key.
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</dl>
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<h2>
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<img src="images/constructor-index.gif" width=275 height=38 alt="Constructor Index">
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</h2>
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<dl>
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<dt> <img src="images/yellow-ball-small.gif" width=6 height=6 alt=" o ">
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<a href="#LinkInfo()"><b>LinkInfo</b></a>()
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<dd>
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</dl>
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<a name="variables"></a>
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<h2>
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<img src="images/variables.gif" width=153 height=38 alt="Variables">
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</h2>
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<a name="parentKey"><img src="images/magenta-ball.gif" width=12 height=12 alt=" o "></a>
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<b>parentKey</b>
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<pre>
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public <a href="de.tudarmstadt.ito.xmldbms.Column.html#_top_">Column</a> parentKey[]
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</pre>
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<dl>
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<dd> Columns in the parent key.<p>
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</dl>
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<a name="childKey"><img src="images/magenta-ball.gif" width=12 height=12 alt=" o "></a>
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<b>childKey</b>
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<pre>
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public <a href="de.tudarmstadt.ito.xmldbms.Column.html#_top_">Column</a> childKey[]
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</pre>
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<dl>
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<dd> Columns in the child key.<p>
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</dl>
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<a name="generateKey"><img src="images/magenta-ball.gif" width=12 height=12 alt=" o "></a>
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<b>generateKey</b>
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<pre>
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public boolean generateKey
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</pre>
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<dl>
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<dd> Whether the candidate key is to be generated.<p>
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</dl>
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<a name="parentKeyIsCandidate"><img src="images/magenta-ball.gif" width=12 height=12 alt=" o "></a>
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<b>parentKeyIsCandidate</b>
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<pre>
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public boolean parentKeyIsCandidate
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</pre>
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<dl>
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<dd> Whether the parent key is the candidate key.<p>
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</dl>
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<a name="constructors"></a>
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<h2>
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<img src="images/constructors.gif" width=231 height=38 alt="Constructors">
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</h2>
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<a name="LinkInfo"></a>
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<a name="LinkInfo()"><img src="images/yellow-ball.gif" width=12 height=12 alt=" o "></a>
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<b>LinkInfo</b>
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<pre>
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public LinkInfo()
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</pre>
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<hr>
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<pre>
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<a href="packages.html">All Packages</a> <a href="tree.html">Class Hierarchy</a> <a href="Package-de.tudarmstadt.ito.xmldbms.html">This Package</a> <a href="de.tudarmstadt.ito.xmldbms.DocumentInfo.html#_top_">Previous</a> <a href="de.tudarmstadt.ito.xmldbms.Map.html#_top_">Next</a> <a href="AllNames.html">Index</a></pre>
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</body>
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</html>
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