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axion 1.0-M1 API: Interface DataType
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SUMMARY: INNER | FIELD | CONSTR | <A HREF="#method_summary">METHOD</A></FONT></TD>
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org.axiondb</FONT>
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Interface DataType</H2>
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<DT><B>All Superinterfaces:</B> <DD><A HREF="http://java.sun.com/products/jdk/1.3/docs/api/java/io/Serializable.html">Serializable</A></DD>
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<DT><B>All Known Implementing Classes:</B> <DD><A HREF="../../org/axiondb/types/BaseDataType.html">BaseDataType</A></DD>
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<DT>public interface <B>DataType</B><DT>extends <A HREF="http://java.sun.com/products/jdk/1.3/docs/api/java/io/Serializable.html">Serializable</A></DL>
<P>
The type of a field (column) that can be stored in a <A HREF="../../org/axiondb/Table.html"><CODE>Table</CODE></A>. <p> Responsible for <A HREF="../../org/axiondb/DataType.html#accepts(java.lang.Object)"><CODE>testing</CODE></A> that a value is assignable to fields of this type, for <A HREF="../../org/axiondb/DataType.html#convert(java.lang.Object)"><CODE>converting</CODE></A> <A HREF="http://java.sun.com/products/jdk/1.3/docs/api/java/lang/Object.html"><CODE>Objects</CODE></A> to this type, and for <A HREF="../../org/axiondb/DataType.html#read(java.io.DataInput)"><CODE>reading</CODE></A> values from and <A HREF="../../org/axiondb/DataType.html#write(java.lang.Object, java.io.DataOutput)"><CODE>writing</CODE></A> values to a stream.
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<DT><B>Version: </B><DD>$Revision: 1.7 $ $Date: 2003/02/04 03:00:02 $</DD>
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<CODE> boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../org/axiondb/DataType.html#accepts(java.lang.Object)">accepts</A></B>(<A HREF="http://java.sun.com/products/jdk/1.3/docs/api/java/lang/Object.html">Object</A> value)</CODE>
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Return <code>true</code> if a field of my type can be assigned the given non-<code>null</code> <i>value</i>, <code>false</code> otherwise.</TD>
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<CODE> <A HREF="http://java.sun.com/products/jdk/1.3/docs/api/java/lang/Object.html">Object</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../org/axiondb/DataType.html#convert(java.lang.Object)">convert</A></B>(<A HREF="http://java.sun.com/products/jdk/1.3/docs/api/java/lang/Object.html">Object</A> value)</CODE>
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Converts an <A HREF="../../org/axiondb/DataType.html#accepts(java.lang.Object)"><CODE>acceptable</CODE></A> value to one of the appropriate type.</TD>
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<CODE> <A HREF="http://java.sun.com/products/jdk/1.3/docs/api/java/util/Comparator.html">Comparator</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../org/axiondb/DataType.html#getComparator()">getComparator</A></B>()</CODE>
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Returns a comparator used for comparing and ordering values of this type.</TD>
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<CODE> int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../org/axiondb/DataType.html#getJdbcType()">getJdbcType</A></B>()</CODE>
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Returns the JDBC <A HREF="http://java.sun.com/products/jdk/1.3/docs/api/java/sql/Types.html"><CODE>type code</CODE></A> most closely matching this type.</TD>
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<CODE> <A HREF="http://java.sun.com/products/jdk/1.3/docs/api/java/lang/String.html">String</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../org/axiondb/DataType.html#getLiteralPrefix()">getLiteralPrefix</A></B>()</CODE>
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Prefix used to quote a literal to delimit value for this type when in SQL syntax or result display</TD>
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<CODE> <A HREF="http://java.sun.com/products/jdk/1.3/docs/api/java/lang/String.html">String</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../org/axiondb/DataType.html#getLiteralSuffix()">getLiteralSuffix</A></B>()</CODE>
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Suffix used to quote a literal to delimit value for this type when in SQL syntax or result display</TD>
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<CODE> int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../org/axiondb/DataType.html#getNullableCode()">getNullableCode</A></B>()</CODE>
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Code indicating that type does not accept, does accept, or does not disclose acceptance of <code>null</code> values</TD>
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<CODE> <A HREF="http://java.sun.com/products/jdk/1.3/docs/api/java/lang/String.html">String</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../org/axiondb/DataType.html#getPreferredValueClassName()">getPreferredValueClassName</A></B>()</CODE>
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Returns the "normal" type returned by <A HREF="../../org/axiondb/DataType.html#convert(java.lang.Object)"><CODE>convert(java.lang.Object)</CODE></A>.</TD>
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<CODE> short</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../org/axiondb/DataType.html#getSearchableCode()">getSearchableCode</A></B>()</CODE>
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Code indicating how much <code>WHERE ...</TD>
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<CODE> boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../org/axiondb/DataType.html#isCaseSensitive()">isCaseSensitive</A></B>()</CODE>
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For character and string-related types, indicates whether type acknowledges case when storing and retrieving values</TD>
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<CODE> boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../org/axiondb/DataType.html#isUnsigned()">isUnsigned</A></B>()</CODE>
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For numeric types, indicates whether type stores only positive (> 0) values</TD>
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<CODE> <A HREF="http://java.sun.com/products/jdk/1.3/docs/api/java/lang/Object.html">Object</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../org/axiondb/DataType.html#read(java.io.DataInput)">read</A></B>(<A HREF="http://java.sun.com/products/jdk/1.3/docs/api/java/io/DataInput.html">DataInput</A> in)</CODE>
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Instantiate an object of my type from the given <A HREF="http://java.sun.com/products/jdk/1.3/docs/api/java/io/DataInput.html"><CODE>DataInput</CODE></A>.</TD>
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<CODE> <A HREF="http://java.sun.com/products/jdk/1.3/docs/api/java/lang/Object.html">Object</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../org/axiondb/DataType.html#successor(java.lang.Object)">successor</A></B>(<A HREF="http://java.sun.com/products/jdk/1.3/docs/api/java/lang/Object.html">Object</A> value)</CODE>
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Returns the successor for the given value.</TD>
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<CODE> boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../org/axiondb/DataType.html#supportsSuccessor()">supportsSuccessor</A></B>()</CODE>
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Returns <code>true</code> if the <A HREF="../../org/axiondb/DataType.html#successor(java.lang.Object)"><CODE>successor(java.lang.Object)</CODE></A> method is supported, false otherwise.</TD>
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> <A HREF="http://java.sun.com/products/jdk/1.3/docs/api/java/math/BigDecimal.html">BigDecimal</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../org/axiondb/DataType.html#toBigDecimal(java.lang.Object)">toBigDecimal</A></B>(<A HREF="http://java.sun.com/products/jdk/1.3/docs/api/java/lang/Object.html">Object</A> value)</CODE>
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