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| org.apache.openjpa.lib.util</FONT> |
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| Class Bytes</H2> |
| <PRE> |
| <A HREF="http://java.sun.com/j2se/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">java.lang.Object</A> |
| <IMG SRC="../../../../../resources/inherit.gif" ALT="extended by "><B>org.apache.openjpa.lib.util.Bytes</B> |
| </PRE> |
| <HR> |
| <DL> |
| <DT><PRE>public final class <B>Bytes</B><DT>extends <A HREF="http://java.sun.com/j2se/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A></DL> |
| </PRE> |
| |
| <P> |
| This class came from the Apache Commons Id sandbox project in support |
| of the UUIDGenerator implementation. |
| |
| <p>Static methods for managing byte arrays (all methods follow Big |
| Endian order where most significant bits are in front).</p> |
| <P> |
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| <CODE>static byte[]</CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../../../org/apache/openjpa/lib/util/Bytes.html#append(byte[], byte[])">append</A></B>(byte[] a, |
| byte[] b)</CODE> |
| |
| <BR> |
| Appends two bytes array into one.</TD> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
| <CODE>static boolean</CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../../../org/apache/openjpa/lib/util/Bytes.html#areEqual(byte[], byte[])">areEqual</A></B>(byte[] a, |
| byte[] b)</CODE> |
| |
| <BR> |
| Compares two byte arrays for equality.</TD> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
| <CODE>static int</CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../../../org/apache/openjpa/lib/util/Bytes.html#compareTo(byte[], byte[])">compareTo</A></B>(byte[] lhs, |
| byte[] rhs)</CODE> |
| |
| <BR> |
| Compares two byte arrays as specified by <code>Comparable</code>.</TD> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
| <CODE>static byte[]</CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../../../org/apache/openjpa/lib/util/Bytes.html#toBytes(long)">toBytes</A></B>(long n)</CODE> |
| |
| <BR> |
| Returns a 8-byte array built from a long.</TD> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
| <CODE>static byte[]</CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../../../org/apache/openjpa/lib/util/Bytes.html#toBytes(long, byte[])">toBytes</A></B>(long n, |
| byte[] b)</CODE> |
| |
| <BR> |
| Build a 8-byte array from a long.</TD> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
| <CODE>static long</CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../../../org/apache/openjpa/lib/util/Bytes.html#toLong(byte[])">toLong</A></B>(byte[] b)</CODE> |
| |
| <BR> |
| Build a long from first 8 bytes of the array.</TD> |
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| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
| <CODE>static short</CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../../../org/apache/openjpa/lib/util/Bytes.html#toShort(byte[])">toShort</A></B>(byte[] b)</CODE> |
| |
| <BR> |
| Build a short from first 2 bytes of the array.</TD> |
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| <A NAME="append(byte[], byte[])"><!-- --></A><H3> |
| append</H3> |
| <PRE> |
| public static byte[] <B>append</B>(byte[] a, |
| byte[] b)</PRE> |
| <DL> |
| <DD>Appends two bytes array into one. |
| <P> |
| <DD><DL> |
| <DT><B>Parameters:</B><DD><CODE>a</CODE> - A byte[].<DD><CODE>b</CODE> - A byte[]. |
| <DT><B>Returns:</B><DD>A byte[].</DL> |
| </DD> |
| </DL> |
| <HR> |
| |
| <A NAME="toBytes(long)"><!-- --></A><H3> |
| toBytes</H3> |
| <PRE> |
| public static byte[] <B>toBytes</B>(long n)</PRE> |
| <DL> |
| <DD>Returns a 8-byte array built from a long. |
| <P> |
| <DD><DL> |
| <DT><B>Parameters:</B><DD><CODE>n</CODE> - The number to convert. |
| <DT><B>Returns:</B><DD>A byte[].</DL> |
| </DD> |
| </DL> |
| <HR> |
| |
| <A NAME="toBytes(long, byte[])"><!-- --></A><H3> |
| toBytes</H3> |
| <PRE> |
| public static byte[] <B>toBytes</B>(long n, |
| byte[] b)</PRE> |
| <DL> |
| <DD>Build a 8-byte array from a long. No check is performed on the |
| array length. |
| <P> |
| <DD><DL> |
| <DT><B>Parameters:</B><DD><CODE>n</CODE> - The number to convert.<DD><CODE>b</CODE> - The array to fill. |
| <DT><B>Returns:</B><DD>A byte[].</DL> |
| </DD> |
| </DL> |
| <HR> |
| |
| <A NAME="toLong(byte[])"><!-- --></A><H3> |
| toLong</H3> |
| <PRE> |
| public static long <B>toLong</B>(byte[] b)</PRE> |
| <DL> |
| <DD>Build a long from first 8 bytes of the array. |
| <P> |
| <DD><DL> |
| <DT><B>Parameters:</B><DD><CODE>b</CODE> - The byte[] to convert. |
| <DT><B>Returns:</B><DD>A long.</DL> |
| </DD> |
| </DL> |
| <HR> |
| |
| <A NAME="areEqual(byte[], byte[])"><!-- --></A><H3> |
| areEqual</H3> |
| <PRE> |
| public static boolean <B>areEqual</B>(byte[] a, |
| byte[] b)</PRE> |
| <DL> |
| <DD>Compares two byte arrays for equality. |
| <P> |
| <DD><DL> |
| <DT><B>Parameters:</B><DD><CODE>a</CODE> - A byte[].<DD><CODE>b</CODE> - A byte[]. |
| <DT><B>Returns:</B><DD>True if the arrays have identical contents.</DL> |
| </DD> |
| </DL> |
| <HR> |
| |
| <A NAME="compareTo(byte[], byte[])"><!-- --></A><H3> |
| compareTo</H3> |
| <PRE> |
| public static int <B>compareTo</B>(byte[] lhs, |
| byte[] rhs)</PRE> |
| <DL> |
| <DD><p>Compares two byte arrays as specified by <code>Comparable</code>. |
| <P> |
| <DD><DL> |
| <DT><B>Parameters:</B><DD><CODE>lhs</CODE> - - left hand value in the comparison operation.<DD><CODE>rhs</CODE> - - right hand value in the comparison operation. |
| <DT><B>Returns:</B><DD>a negative integer, zero, or a positive integer as |
| <code>lhs</code> is less than, equal to, or greater than |
| <code>rhs</code>.</DL> |
| </DD> |
| </DL> |
| <HR> |
| |
| <A NAME="toShort(byte[])"><!-- --></A><H3> |
| toShort</H3> |
| <PRE> |
| public static short <B>toShort</B>(byte[] b)</PRE> |
| <DL> |
| <DD>Build a short from first 2 bytes of the array. |
| <P> |
| <DD><DL> |
| <DT><B>Parameters:</B><DD><CODE>b</CODE> - The byte[] to convert. |
| <DT><B>Returns:</B><DD>A short.</DL> |
| </DD> |
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