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DbReferenceSet
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net.sourceforge.pain.db</FONT>
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Class DbReferenceSet</H2>
<PRE>
java.lang.Object
<IMG SRC="../../../../resources/inherit.gif" ALT="extended by">net.sourceforge.pain.db.DbCollection
<IMG SRC="../../../../resources/inherit.gif" ALT="extended by">net.sourceforge.pain.db.DbAbstractMap
<IMG SRC="../../../../resources/inherit.gif" ALT="extended by"><B>net.sourceforge.pain.db.DbReferenceSet</B>
</PRE>
<DL>
<DT><B>All Implemented Interfaces:</B> <DD>java.util.Collection, java.util.Set</DD>
</DL>
<HR>
<DL>
<DT>public final class <B>DbReferenceSet</B><DT>extends net.sourceforge.pain.db.DbAbstractMap<DT>implements java.util.Set</DL>
<P>
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<CODE> boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../net/sourceforge/pain/db/DbReferenceSet.html#add(java.lang.Object)">add</A></B>(java.lang.Object o)</CODE>
<BR>
Adds the specified element to this set if it is not already present
(optional operation).</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="../../../../net/sourceforge/pain/db/DbReferenceSet.html#addAll(java.util.Collection)">addAll</A></B>(java.util.Collection c)</CODE>
<BR>
Adds all of the elements in the specified collection to this set if
they're not already present (optional operation).</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../net/sourceforge/pain/db/DbReferenceSet.html#clear()">clear</A></B>()</CODE>
<BR>
Removes all of the elements from this set (optional operation).</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="../../../../net/sourceforge/pain/db/DbReferenceSet.html#contains(java.lang.Object)">contains</A></B>(java.lang.Object o)</CODE>
<BR>
Returns <tt>true</tt> if this set contains the specified element.</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="../../../../net/sourceforge/pain/db/DbReferenceSet.html#containsAll(java.util.Collection)">containsAll</A></B>(java.util.Collection c)</CODE>
<BR>
Returns <tt>true</tt> if this set contains all of the elements of the
specified collection.</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="../../../../net/sourceforge/pain/db/DbReferenceSet.html#isEmpty()">isEmpty</A></B>()</CODE>
<BR>
Returns <tt>true</tt> if this set contains no elements.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> java.util.Iterator</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../net/sourceforge/pain/db/DbReferenceSet.html#iterator()">iterator</A></B>()</CODE>
<BR>
Returns an iterator over the elements in this set.</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="../../../../net/sourceforge/pain/db/DbReferenceSet.html#remove(java.lang.Object)">remove</A></B>(java.lang.Object o)</CODE>
<BR>
Removes the specified element from this set if it is present (optional
operation).</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="../../../../net/sourceforge/pain/db/DbReferenceSet.html#removeAll(java.util.Collection)">removeAll</A></B>(java.util.Collection c)</CODE>
<BR>
Removes from this set all of its elements that are contained in the
specified collection (optional operation).</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="../../../../net/sourceforge/pain/db/DbReferenceSet.html#retainAll(java.util.Collection)">retainAll</A></B>(java.util.Collection c)</CODE>
<BR>
Retains only the elements in this set that are contained in the
specified collection (optional operation).</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="../../../../net/sourceforge/pain/db/DbReferenceSet.html#size()">size</A></B>()</CODE>
<BR>
Returns the number of elements in this set (its cardinality).</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> java.lang.Object[]</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../net/sourceforge/pain/db/DbReferenceSet.html#toArray()">toArray</A></B>()</CODE>
<BR>
Returns an array containing all of the elements in this set.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> java.lang.Object[]</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../net/sourceforge/pain/db/DbReferenceSet.html#toArray(java.lang.Object[])">toArray</A></B>(java.lang.Object[] a)</CODE>
<BR>
Returns an array containing all of the elements in this set; the
runtime type of the returned array is that of the specified array.</TD>
</TR>
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<TD><B>Methods inherited from class java.lang.Object</B></TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE>clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait</CODE></TD>
</TR>
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<TD><B>Methods inherited from interface java.util.Set</B></TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE>equals, hashCode</CODE></TD>
</TR>
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<P>
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<A NAME="size()"><!-- --></A><H3>
size</H3>
<PRE>
public int <B>size</B>()</PRE>
<DL>
<DD><B>Description copied from interface: <CODE>java.util.Set</CODE></B></DD>
<DD>Returns the number of elements in this set (its cardinality). If this
set contains more than <tt>Integer.MAX_VALUE</tt> elements, returns
<tt>Integer.MAX_VALUE</tt>.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE>size</CODE> in interface <CODE>java.util.Set</CODE></DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>the number of elements in this set (its cardinality).</DL>
</DD>
</DL>
<HR>
<A NAME="clear()"><!-- --></A><H3>
clear</H3>
<PRE>
public void <B>clear</B>()</PRE>
<DL>
<DD><B>Description copied from interface: <CODE>java.util.Set</CODE></B></DD>
<DD>Removes all of the elements from this set (optional operation).
This set will be empty after this call returns (unless it throws an
exception).
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE>clear</CODE> in interface <CODE>java.util.Set</CODE></DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="isEmpty()"><!-- --></A><H3>
isEmpty</H3>
<PRE>
public boolean <B>isEmpty</B>()</PRE>
<DL>
<DD><B>Description copied from interface: <CODE>java.util.Set</CODE></B></DD>
<DD>Returns <tt>true</tt> if this set contains no elements.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE>isEmpty</CODE> in interface <CODE>java.util.Set</CODE></DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD><tt>true</tt> if this set contains no elements.</DL>
</DD>
</DL>
<HR>
<A NAME="toArray()"><!-- --></A><H3>
toArray</H3>
<PRE>
public java.lang.Object[] <B>toArray</B>()</PRE>
<DL>
<DD><B>Description copied from interface: <CODE>java.util.Set</CODE></B></DD>
<DD>Returns an array containing all of the elements in this set.
Obeys the general contract of the <tt>Collection.toArray</tt> method.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE>toArray</CODE> in interface <CODE>java.util.Set</CODE></DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>an array containing all of the elements in this set.</DL>
</DD>
</DL>
<HR>
<A NAME="add(java.lang.Object)"><!-- --></A><H3>
add</H3>
<PRE>
public boolean <B>add</B>(java.lang.Object o)</PRE>
<DL>
<DD><B>Description copied from interface: <CODE>java.util.Set</CODE></B></DD>
<DD>Adds the specified element to this set if it is not already present
(optional operation). More formally, adds the specified element,
<code>o</code>, to this set if this set contains no element
<code>e</code> such that <code>(o==null ? e==null :
o.equals(e))</code>. If this set already contains the specified
element, the call leaves this set unchanged and returns <tt>false</tt>.
In combination with the restriction on constructors, this ensures that
sets never contain duplicate elements.<p>
The stipulation above does not imply that sets must accept all
elements; sets may refuse to add any particular element, including
<tt>null</tt>, and throwing an exception, as described in the
specification for <tt>Collection.add</tt>. Individual set
implementations should clearly document any restrictions on the the
elements that they may contain.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE>add</CODE> in interface <CODE>java.util.Set</CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>o</CODE> - element to be added to this set.
<DT><B>Returns:</B><DD><tt>true</tt> if this set did not already contain the specified
element.</DL>
</DD>
</DL>
<HR>
<A NAME="contains(java.lang.Object)"><!-- --></A><H3>
contains</H3>
<PRE>
public boolean <B>contains</B>(java.lang.Object o)</PRE>
<DL>
<DD><B>Description copied from interface: <CODE>java.util.Set</CODE></B></DD>
<DD>Returns <tt>true</tt> if this set contains the specified element. More
formally, returns <tt>true</tt> if and only if this set contains an
element <code>e</code> such that <code>(o==null ? e==null :
o.equals(e))</code>.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE>contains</CODE> in interface <CODE>java.util.Set</CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>o</CODE> - element whose presence in this set is to be tested.
<DT><B>Returns:</B><DD><tt>true</tt> if this set contains the specified element.</DL>
</DD>
</DL>
<HR>
<A NAME="remove(java.lang.Object)"><!-- --></A><H3>
remove</H3>
<PRE>
public boolean <B>remove</B>(java.lang.Object o)</PRE>
<DL>
<DD><B>Description copied from interface: <CODE>java.util.Set</CODE></B></DD>
<DD>Removes the specified element from this set if it is present (optional
operation). More formally, removes an element <code>e</code> such that
<code>(o==null ? e==null : o.equals(e))</code>, if the set contains
such an element. Returns <tt>true</tt> if the set contained the
specified element (or equivalently, if the set changed as a result of
the call). (The set will not contain the specified element once the
call returns.)
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE>remove</CODE> in interface <CODE>java.util.Set</CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>o</CODE> - object to be removed from this set, if present.
<DT><B>Returns:</B><DD>true if the set contained the specified element.</DL>
</DD>
</DL>
<HR>
<A NAME="addAll(java.util.Collection)"><!-- --></A><H3>
addAll</H3>
<PRE>
public boolean <B>addAll</B>(java.util.Collection c)</PRE>
<DL>
<DD><B>Description copied from interface: <CODE>java.util.Set</CODE></B></DD>
<DD>Adds all of the elements in the specified collection to this set if
they're not already present (optional operation). If the specified
collection is also a set, the <tt>addAll</tt> operation effectively
modifies this set so that its value is the <i>union</i> of the two
sets. The behavior of this operation is unspecified if the specified
collection is modified while the operation is in progress.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE>addAll</CODE> in interface <CODE>java.util.Set</CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>c</CODE> - collection whose elements are to be added to this set.
<DT><B>Returns:</B><DD><tt>true</tt> if this set changed as a result of the call.<DT><B>See Also:</B><DD><CODE>Set.add(Object)</CODE></DL>
</DD>
</DL>
<HR>
<A NAME="containsAll(java.util.Collection)"><!-- --></A><H3>
containsAll</H3>
<PRE>
public boolean <B>containsAll</B>(java.util.Collection c)</PRE>
<DL>
<DD><B>Description copied from interface: <CODE>java.util.Set</CODE></B></DD>
<DD>Returns <tt>true</tt> if this set contains all of the elements of the
specified collection. If the specified collection is also a set, this
method returns <tt>true</tt> if it is a <i>subset</i> of this set.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE>containsAll</CODE> in interface <CODE>java.util.Set</CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>c</CODE> - collection to be checked for containment in this set.
<DT><B>Returns:</B><DD><tt>true</tt> if this set contains all of the elements of the
specified collection.<DT><B>See Also:</B><DD><CODE>Set.contains(Object)</CODE></DL>
</DD>
</DL>
<HR>
<A NAME="removeAll(java.util.Collection)"><!-- --></A><H3>
removeAll</H3>
<PRE>
public boolean <B>removeAll</B>(java.util.Collection c)</PRE>
<DL>
<DD><B>Description copied from interface: <CODE>java.util.Set</CODE></B></DD>
<DD>Removes from this set all of its elements that are contained in the
specified collection (optional operation). If the specified
collection is also a set, this operation effectively modifies this
set so that its value is the <i>asymmetric set difference</i> of
the two sets.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE>removeAll</CODE> in interface <CODE>java.util.Set</CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>c</CODE> - collection that defines which elements will be removed from
this set.
<DT><B>Returns:</B><DD><tt>true</tt> if this set changed as a result of the call.<DT><B>See Also:</B><DD><CODE>Set.remove(Object)</CODE></DL>
</DD>
</DL>
<HR>
<A NAME="retainAll(java.util.Collection)"><!-- --></A><H3>
retainAll</H3>
<PRE>
public boolean <B>retainAll</B>(java.util.Collection c)</PRE>
<DL>
<DD><B>Description copied from interface: <CODE>java.util.Set</CODE></B></DD>
<DD>Retains only the elements in this set that are contained in the
specified collection (optional operation). In other words, removes
from this set all of its elements that are not contained in the
specified collection. If the specified collection is also a set, this
operation effectively modifies this set so that its value is the
<i>intersection</i> of the two sets.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE>retainAll</CODE> in interface <CODE>java.util.Set</CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>c</CODE> - collection that defines which elements this set will retain.
<DT><B>Returns:</B><DD><tt>true</tt> if this collection changed as a result of the
call.<DT><B>See Also:</B><DD><CODE>Set.remove(Object)</CODE></DL>
</DD>
</DL>
<HR>
<A NAME="iterator()"><!-- --></A><H3>
iterator</H3>
<PRE>
public java.util.Iterator <B>iterator</B>()</PRE>
<DL>
<DD><B>Description copied from interface: <CODE>java.util.Set</CODE></B></DD>
<DD>Returns an iterator over the elements in this set. The elements are
returned in no particular order (unless this set is an instance of some
class that provides a guarantee).
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE>iterator</CODE> in interface <CODE>java.util.Set</CODE></DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>an iterator over the elements in this set.</DL>
</DD>
</DL>
<HR>
<A NAME="toArray(java.lang.Object[])"><!-- --></A><H3>
toArray</H3>
<PRE>
public java.lang.Object[] <B>toArray</B>(java.lang.Object[] a)</PRE>
<DL>
<DD><B>Description copied from interface: <CODE>java.util.Set</CODE></B></DD>
<DD>Returns an array containing all of the elements in this set; the
runtime type of the returned array is that of the specified array.
Obeys the general contract of the
<tt>Collection.toArray(Object[])</tt> method.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE>toArray</CODE> in interface <CODE>java.util.Set</CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>a</CODE> - the array into which the elements of this set are to
be stored, if it is big enough; otherwise, a new array of the
same runtime type is allocated for this purpose.
<DT><B>Returns:</B><DD>an array containing the elements of this set.</DL>
</DD>
</DL>
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