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DateTimeComparator (Joda time 2.1 API)
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org.joda.time</FONT>
<BR>
Class DateTimeComparator</H2>
<PRE>
java.lang.Object
<IMG SRC="../../../resources/inherit.gif" ALT="extended by "><B>org.joda.time.DateTimeComparator</B>
</PRE>
<DL>
<DT><B>All Implemented Interfaces:</B> <DD>java.io.Serializable, java.util.Comparator<java.lang.Object></DD>
</DL>
<HR>
<DL>
<DT><PRE>public class <B>DateTimeComparator</B><DT>extends java.lang.Object<DT>implements java.util.Comparator<java.lang.Object>, java.io.Serializable</DL>
</PRE>
<P>
DateTimeComparator provides comparators to compare one date with another.
<p>
Dates may be specified using any object recognised by the
<A HREF="../../../org/joda/time/convert/ConverterManager.html" title="class in org.joda.time.convert"><CODE>ConverterManager</CODE></A> class.
<p>
The default objects recognised by the comparator are:
<ul>
<li>ReadableInstant
<li>String
<li>Calendar
<li>Date
<li>Long (milliseconds)
<li>null (now)
</ul>
<p>
DateTimeComparator is thread-safe and immutable.
<P>
<P>
<DL>
<DT><B>Since:</B></DT>
<DD>1.0</DD>
<DT><B>Author:</B></DT>
<DD>Guy Allard, Stephen Colebourne, Brian S O'Neill</DD>
<DT><B>See Also:</B><DD><A HREF="../../../serialized-form.html#org.joda.time.DateTimeComparator">Serialized Form</A></DL>
<HR>
<P>
<!-- ======== CONSTRUCTOR SUMMARY ======== -->
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>protected </CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../org/joda/time/DateTimeComparator.html#DateTimeComparator(org.joda.time.DateTimeFieldType, org.joda.time.DateTimeFieldType)">DateTimeComparator</A></B>(<A HREF="../../../org/joda/time/DateTimeFieldType.html" title="class in org.joda.time">DateTimeFieldType</A> lowerLimit,
<A HREF="../../../org/joda/time/DateTimeFieldType.html" title="class in org.joda.time">DateTimeFieldType</A> upperLimit)</CODE>
<BR>
Restricted constructor.</TD>
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<CODE> int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../org/joda/time/DateTimeComparator.html#compare(java.lang.Object, java.lang.Object)">compare</A></B>(java.lang.Object lhsObj,
java.lang.Object rhsObj)</CODE>
<BR>
Compare two objects against only the range of date time fields as
specified in the constructor.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../org/joda/time/DateTimeComparator.html#equals(java.lang.Object)">equals</A></B>(java.lang.Object object)</CODE>
<BR>
Compares this comparator to another.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static <A HREF="../../../org/joda/time/DateTimeComparator.html" title="class in org.joda.time">DateTimeComparator</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../org/joda/time/DateTimeComparator.html#getDateOnlyInstance()">getDateOnlyInstance</A></B>()</CODE>
<BR>
Returns a comparator that only considers date fields.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static <A HREF="../../../org/joda/time/DateTimeComparator.html" title="class in org.joda.time">DateTimeComparator</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../org/joda/time/DateTimeComparator.html#getInstance()">getInstance</A></B>()</CODE>
<BR>
Returns a DateTimeComparator the compares the entire date time value.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static <A HREF="../../../org/joda/time/DateTimeComparator.html" title="class in org.joda.time">DateTimeComparator</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../org/joda/time/DateTimeComparator.html#getInstance(org.joda.time.DateTimeFieldType)">getInstance</A></B>(<A HREF="../../../org/joda/time/DateTimeFieldType.html" title="class in org.joda.time">DateTimeFieldType</A> lowerLimit)</CODE>
<BR>
Returns a DateTimeComparator with a lower limit only.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static <A HREF="../../../org/joda/time/DateTimeComparator.html" title="class in org.joda.time">DateTimeComparator</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../org/joda/time/DateTimeComparator.html#getInstance(org.joda.time.DateTimeFieldType, org.joda.time.DateTimeFieldType)">getInstance</A></B>(<A HREF="../../../org/joda/time/DateTimeFieldType.html" title="class in org.joda.time">DateTimeFieldType</A> lowerLimit,
<A HREF="../../../org/joda/time/DateTimeFieldType.html" title="class in org.joda.time">DateTimeFieldType</A> upperLimit)</CODE>
<BR>
Returns a DateTimeComparator with a lower and upper limit.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> <A HREF="../../../org/joda/time/DateTimeFieldType.html" title="class in org.joda.time">DateTimeFieldType</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../org/joda/time/DateTimeComparator.html#getLowerLimit()">getLowerLimit</A></B>()</CODE>
<BR>
Gets the field type that represents the lower limit of comparison.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static <A HREF="../../../org/joda/time/DateTimeComparator.html" title="class in org.joda.time">DateTimeComparator</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../org/joda/time/DateTimeComparator.html#getTimeOnlyInstance()">getTimeOnlyInstance</A></B>()</CODE>
<BR>
Returns a comparator that only considers time fields.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> <A HREF="../../../org/joda/time/DateTimeFieldType.html" title="class in org.joda.time">DateTimeFieldType</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../org/joda/time/DateTimeComparator.html#getUpperLimit()">getUpperLimit</A></B>()</CODE>
<BR>
Gets the field type that represents the upper limit of comparison.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../org/joda/time/DateTimeComparator.html#hashCode()">hashCode</A></B>()</CODE>
<BR>
Gets a suitable hashcode.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> java.lang.String</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../org/joda/time/DateTimeComparator.html#toString()">toString</A></B>()</CODE>
<BR>
Gets a debugging string.</TD>
</TR>
</TABLE>
<A NAME="methods_inherited_from_class_java.lang.Object"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
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<TH ALIGN="left"><B>Methods inherited from class java.lang.Object</B></TH>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE>clone, finalize, getClass, notify, notifyAll, wait, wait, wait</CODE></TD>
</TR>
</TABLE>
<P>
<!-- ========= CONSTRUCTOR DETAIL ======== -->
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<B>Constructor Detail</B></FONT></TH>
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<A NAME="DateTimeComparator(org.joda.time.DateTimeFieldType, org.joda.time.DateTimeFieldType)"><!-- --></A><H3>
DateTimeComparator</H3>
<PRE>
protected <B>DateTimeComparator</B>(<A HREF="../../../org/joda/time/DateTimeFieldType.html" title="class in org.joda.time">DateTimeFieldType</A> lowerLimit,
<A HREF="../../../org/joda/time/DateTimeFieldType.html" title="class in org.joda.time">DateTimeFieldType</A> upperLimit)</PRE>
<DL>
<DD>Restricted constructor.
<P>
<DL>
<DT><B>Parameters:</B><DD><CODE>lowerLimit</CODE> - the lower field limit, null means no limit<DD><CODE>upperLimit</CODE> - the upper field limit, null means no limit</DL>
</DL>
<!-- ============ METHOD DETAIL ========== -->
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<A NAME="getInstance()"><!-- --></A><H3>
getInstance</H3>
<PRE>
public static <A HREF="../../../org/joda/time/DateTimeComparator.html" title="class in org.joda.time">DateTimeComparator</A> <B>getInstance</B>()</PRE>
<DL>
<DD>Returns a DateTimeComparator the compares the entire date time value.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>a comparator over all fields</DL>
</DD>
</DL>
<HR>
<A NAME="getInstance(org.joda.time.DateTimeFieldType)"><!-- --></A><H3>
getInstance</H3>
<PRE>
public static <A HREF="../../../org/joda/time/DateTimeComparator.html" title="class in org.joda.time">DateTimeComparator</A> <B>getInstance</B>(<A HREF="../../../org/joda/time/DateTimeFieldType.html" title="class in org.joda.time">DateTimeFieldType</A> lowerLimit)</PRE>
<DL>
<DD>Returns a DateTimeComparator with a lower limit only. Fields of a
magnitude less than the lower limit are excluded from comparisons.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>lowerLimit</CODE> - inclusive lower limit for fields to be compared, null means no limit
<DT><B>Returns:</B><DD>a comparator over all fields above the lower limit</DL>
</DD>
</DL>
<HR>
<A NAME="getInstance(org.joda.time.DateTimeFieldType, org.joda.time.DateTimeFieldType)"><!-- --></A><H3>
getInstance</H3>
<PRE>
public static <A HREF="../../../org/joda/time/DateTimeComparator.html" title="class in org.joda.time">DateTimeComparator</A> <B>getInstance</B>(<A HREF="../../../org/joda/time/DateTimeFieldType.html" title="class in org.joda.time">DateTimeFieldType</A> lowerLimit,
<A HREF="../../../org/joda/time/DateTimeFieldType.html" title="class in org.joda.time">DateTimeFieldType</A> upperLimit)</PRE>
<DL>
<DD>Returns a DateTimeComparator with a lower and upper limit. Fields of a
magnitude less than the lower limit are excluded from comparisons.
Fields of a magnitude greater than or equal to the upper limit are also
excluded from comparisons. Either limit may be specified as null, which
indicates an unbounded limit.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>lowerLimit</CODE> - inclusive lower limit for fields to be compared, null means no limit<DD><CODE>upperLimit</CODE> - exclusive upper limit for fields to be compared, null means no limit
<DT><B>Returns:</B><DD>a comparator over all fields between the limits</DL>
</DD>
</DL>
<HR>
<A NAME="getDateOnlyInstance()"><!-- --></A><H3>
getDateOnlyInstance</H3>
<PRE>
public static <A HREF="../../../org/joda/time/DateTimeComparator.html" title="class in org.joda.time">DateTimeComparator</A> <B>getDateOnlyInstance</B>()</PRE>
<DL>
<DD>Returns a comparator that only considers date fields.
Time of day is ignored.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>a comparator over all date fields</DL>
</DD>
</DL>
<HR>
<A NAME="getTimeOnlyInstance()"><!-- --></A><H3>
getTimeOnlyInstance</H3>
<PRE>
public static <A HREF="../../../org/joda/time/DateTimeComparator.html" title="class in org.joda.time">DateTimeComparator</A> <B>getTimeOnlyInstance</B>()</PRE>
<DL>
<DD>Returns a comparator that only considers time fields.
Date is ignored.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>a comparator over all time fields</DL>
</DD>
</DL>
<HR>
<A NAME="getLowerLimit()"><!-- --></A><H3>
getLowerLimit</H3>
<PRE>
public <A HREF="../../../org/joda/time/DateTimeFieldType.html" title="class in org.joda.time">DateTimeFieldType</A> <B>getLowerLimit</B>()</PRE>
<DL>
<DD>Gets the field type that represents the lower limit of comparison.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>the field type, null if no upper limit</DL>
</DD>
</DL>
<HR>
<A NAME="getUpperLimit()"><!-- --></A><H3>
getUpperLimit</H3>
<PRE>
public <A HREF="../../../org/joda/time/DateTimeFieldType.html" title="class in org.joda.time">DateTimeFieldType</A> <B>getUpperLimit</B>()</PRE>
<DL>
<DD>Gets the field type that represents the upper limit of comparison.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>the field type, null if no upper limit</DL>
</DD>
</DL>
<HR>
<A NAME="compare(java.lang.Object, java.lang.Object)"><!-- --></A><H3>
compare</H3>
<PRE>
public int <B>compare</B>(java.lang.Object lhsObj,
java.lang.Object rhsObj)</PRE>
<DL>
<DD>Compare two objects against only the range of date time fields as
specified in the constructor.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE>compare</CODE> in interface <CODE>java.util.Comparator<java.lang.Object></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>lhsObj</CODE> - the first object,
logically on the left of a < comparison, null means now<DD><CODE>rhsObj</CODE> - the second object,
logically on the right of a < comparison, null means now
<DT><B>Returns:</B><DD>zero if order does not matter,
negative value if lhsObj < rhsObj, positive value otherwise.
<DT><B>Throws:</B>
<DD><CODE>java.lang.IllegalArgumentException</CODE> - if either argument is not supported</DL>
</DD>
</DL>
<HR>
<A NAME="equals(java.lang.Object)"><!-- --></A><H3>
equals</H3>
<PRE>
public boolean <B>equals</B>(java.lang.Object object)</PRE>
<DL>
<DD>Compares this comparator to another.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE>equals</CODE> in interface <CODE>java.util.Comparator<java.lang.Object></CODE><DT><B>Overrides:</B><DD><CODE>equals</CODE> in class <CODE>java.lang.Object</CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>object</CODE> - the object to compare to
<DT><B>Returns:</B><DD>true if equal</DL>
</DD>
</DL>
<HR>
<A NAME="hashCode()"><!-- --></A><H3>
hashCode</H3>
<PRE>
public int <B>hashCode</B>()</PRE>
<DL>
<DD>Gets a suitable hashcode.
<P>
<DD><DL>
<DT><B>Overrides:</B><DD><CODE>hashCode</CODE> in class <CODE>java.lang.Object</CODE></DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>the hashcode</DL>
</DD>
</DL>
<HR>
<A NAME="toString()"><!-- --></A><H3>
toString</H3>
<PRE>
public java.lang.String <B>toString</B>()</PRE>
<DL>
<DD>Gets a debugging string.
<P>
<DD><DL>
<DT><B>Overrides:</B><DD><CODE>toString</CODE> in class <CODE>java.lang.Object</CODE></DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>a debugging string</DL>
</DD>
</DL>
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