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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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</title>
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</head>
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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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   |
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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>&quot;Parent&quot; and &quot;child&quot; 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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