1<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> 2<!--NewPage--> 3<HTML> 4<HEAD> 5<!-- Generated by javadoc (build 1.5.0) on Thu May 15 17:17:33 EDT 2008 --> 6<TITLE> 7EntityJoin (Oracle - Berkeley DB Java API) 8</TITLE> 9 10<META NAME="keywords" CONTENT="com.sleepycat.persist.EntityJoin class"> 11 12<LINK REL ="stylesheet" TYPE="text/css" HREF="/style.css" TITLE="Style"> 13 14<SCRIPT type="text/javascript"> 15function windowTitle() 16{ 17 parent.document.title="EntityJoin (Oracle - Berkeley DB Java API)"; 18} 19</SCRIPT> 20<NOSCRIPT> 21</NOSCRIPT> 22 23</HEAD> 24 25<BODY BGCOLOR="white" onload="windowTitle();"> 26 27 28<!-- ========= START OF TOP NAVBAR ======= --> 29<A NAME="navbar_top"><!-- --></A> 30<A HREF="#skip-navbar_top" title="Skip navigation links"></A> 31<TABLE BORDER="0" WIDTH="100%" CELLPADDING="1" CELLSPACING="0" SUMMARY=""> 32<TR> 33<TD COLSPAN=2 BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> 34<A NAME="navbar_top_firstrow"><!-- --></A> 35<TABLE BORDER="0" CELLPADDING="0" CELLSPACING="3" SUMMARY=""> 36 <TR ALIGN="center" VALIGN="top"> 37 <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="/overview-summary.html"><FONT CLASS="NavBarFont1"><B>Overview</B></FONT></A> </TD> 38 <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-summary.html"><FONT CLASS="NavBarFont1"><B>Package</B></FONT></A> </TD> 39 <TD BGCOLOR="#FFFFFF" CLASS="NavBarCell1Rev"> <FONT CLASS="NavBarFont1Rev"><B>Class</B></FONT> </TD> 40 <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="class-use/EntityJoin.html"><FONT CLASS="NavBarFont1"><B>Use</B></FONT></A> </TD> 41 <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-tree.html"><FONT CLASS="NavBarFont1"><B>Tree</B></FONT></A> </TD> 42 <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="/deprecated-list.html"><FONT CLASS="NavBarFont1"><B>Deprecated</B></FONT></A> </TD> 43 <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="/index-all.html"><FONT CLASS="NavBarFont1"><B>Index</B></FONT></A> </TD> 44 <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="/help-doc.html"><FONT CLASS="NavBarFont1"><B>Help</B></FONT></A> </TD> 45 </TR> 46</TABLE> 47</TD> 48<TD ALIGN="right" VALIGN="top" ROWSPAN=3><EM> 49<b>Berkeley DB</b><br><font size="-1"> version 4.7.25</font></EM> 50</TD> 51</TR> 52 53<TR> 54<TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> 55 <A HREF="/com/sleepycat/persist/EntityIndex.html" title="interface in com.sleepycat.persist"><B>PREV CLASS</B></A> 56 <A HREF="/com/sleepycat/persist/EntityStore.html" title="class in com.sleepycat.persist"><B>NEXT CLASS</B></A></FONT></TD> 57<TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> 58 <A HREF="/index.html?com/sleepycat/persist/EntityJoin.html" target="_top"><B>FRAMES</B></A> 59 <A HREF="EntityJoin.html" target="_top"><B>NO FRAMES</B></A> 60 <SCRIPT type="text/javascript"> 61 <!-- 62 if(window==top) { 63 document.writeln('<A HREF="/allclasses-noframe.html"><B>All Classes</B></A>'); 64 } 65 //--> 66</SCRIPT> 67<NOSCRIPT> 68 <A HREF="/allclasses-noframe.html"><B>All Classes</B></A> 69</NOSCRIPT> 70 71 72</FONT></TD> 73</TR> 74<TR> 75<TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2"> 76 SUMMARY: NESTED | FIELD | <A HREF="#constructor_summary">CONSTR</A> | <A HREF="#method_summary">METHOD</A></FONT></TD> 77<TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2"> 78DETAIL: FIELD | <A HREF="#constructor_detail">CONSTR</A> | <A HREF="#method_detail">METHOD</A></FONT></TD> 79</TR> 80</TABLE> 81<A NAME="skip-navbar_top"></A> 82<!-- ========= END OF TOP NAVBAR ========= --> 83 84<HR> 85<!-- ======== START OF CLASS DATA ======== --> 86<H2> 87<FONT SIZE="-1"> 88com.sleepycat.persist</FONT> 89<BR> 90Class EntityJoin<PK,E></H2> 91<PRE> 92<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html" title="class or interface in java.lang">java.lang.Object</A> 93 <IMG SRC="/resources/inherit.gif" ALT="extended by "><B>com.sleepycat.persist.EntityJoin<PK,E></B> 94</PRE> 95<HR> 96<DL> 97<DT><PRE>public class <B>EntityJoin<PK,E></B><DT>extends <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A></DL> 98</PRE> 99 100<P> 101Performs an equality join on two or more secondary keys. 102 103 <p><code>EntityJoin</code> objects are thread-safe. Multiple threads may safely 104 call the methods of a shared <code>EntityJoin</code> object.</p> 105 106 <p>An equality join is a match on all entities in a given primary index that 107 have two or more specific secondary key values. Note that key ranges may 108 not be matched by an equality join, only exact keys are matched.</p> 109 110 <p>For example:</p> 111 <pre class="code"> 112 // Index declarations -- see <a href="package-summary.html#example">package summary example</a>. 113 // 114 PrimaryIndex<String,Person> personBySsn; 115 SecondaryIndex<String,String,Person> personByParentSsn; 116 SecondaryIndex<Long,String,Person> personByEmployerIds; 117 Employer employer = ...; 118 119 // Match on all Person objects having parentSsn "111-11-1111" and also 120 // containing an employerId of employer.id. In other words, match on all 121 // of Bob's children that work for a given employer. 122 // 123 EntityJoin<String,Person> join = new EntityJoin(personBySsn); 124 join.addCondition(personByParentSsn, "111-11-1111"); 125 join.addCondition(personByEmployerIds, employer.id); 126 127 // Perform the join operation by traversing the results with a cursor. 128 // 129 ForwardCursor<Person> results = join.entities(); 130 try { 131 for (Person person : results) { 132 System.out.println(person.ssn + ' ' + person.name); 133 } 134 } finally { 135 results.close(); 136 }</pre> 137<P> 138 139<P> 140<HR> 141 142<P> 143 144<!-- ======== CONSTRUCTOR SUMMARY ======== --> 145 146<A NAME="constructor_summary"><!-- --></A> 147<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""> 148<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"> 149<TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2"> 150<B>Constructor Summary</B></FONT></TH> 151</TR> 152<TR BGCOLOR="white" CLASS="TableRowColor"> 153<TD><CODE><B><A HREF="/com/sleepycat/persist/EntityJoin.html#EntityJoin(com.sleepycat.persist.PrimaryIndex)">EntityJoin</A></B>(<A HREF="/com/sleepycat/persist/PrimaryIndex.html" title="class in com.sleepycat.persist">PrimaryIndex</A><<A HREF="/com/sleepycat/persist/EntityJoin.html" title="type parameter in EntityJoin">PK</A>,<A HREF="/com/sleepycat/persist/EntityJoin.html" title="type parameter in EntityJoin">E</A>> index)</CODE> 154 155<BR> 156 Creates a join object for a given primary index.</TD> 157</TR> 158</TABLE> 159 160<!-- ========== METHOD SUMMARY =========== --> 161 162<A NAME="method_summary"><!-- --></A> 163<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""> 164<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"> 165<TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2"> 166<B>Method Summary</B></FONT></TH> 167</TR> 168<TR BGCOLOR="white" CLASS="TableRowColor"> 169<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> 170<CODE> 171<TABLE BORDER="0" CELLPADDING="0" CELLSPACING="0" SUMMARY=""> 172<TR ALIGN="right" VALIGN=""> 173<TD NOWRAP><FONT SIZE="-1"> 174<CODE><SK> void</CODE></FONT></TD> 175</TR> 176</TABLE> 177</CODE></FONT></TD> 178<TD><CODE><B><A HREF="/com/sleepycat/persist/EntityJoin.html#addCondition(com.sleepycat.persist.SecondaryIndex, SK)">addCondition</A></B>(<A HREF="/com/sleepycat/persist/SecondaryIndex.html" title="class in com.sleepycat.persist">SecondaryIndex</A><SK,<A HREF="/com/sleepycat/persist/EntityJoin.html" title="type parameter in EntityJoin">PK</A>,<A HREF="/com/sleepycat/persist/EntityJoin.html" title="type parameter in EntityJoin">E</A>> index, 179 SK key)</CODE> 180 181<BR> 182 Adds a secondary key condition to the equality join.</TD> 183</TR> 184<TR BGCOLOR="white" CLASS="TableRowColor"> 185<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> 186<CODE> <A HREF="/com/sleepycat/persist/ForwardCursor.html" title="interface in com.sleepycat.persist">ForwardCursor</A><<A HREF="/com/sleepycat/persist/EntityJoin.html" title="type parameter in EntityJoin">E</A>></CODE></FONT></TD> 187<TD><CODE><B><A HREF="/com/sleepycat/persist/EntityJoin.html#entities()">entities</A></B>()</CODE> 188 189<BR> 190 Opens a cursor that returns the entities qualifying for the join.</TD> 191</TR> 192<TR BGCOLOR="white" CLASS="TableRowColor"> 193<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> 194<CODE> <A HREF="/com/sleepycat/persist/ForwardCursor.html" title="interface in com.sleepycat.persist">ForwardCursor</A><<A HREF="/com/sleepycat/persist/EntityJoin.html" title="type parameter in EntityJoin">E</A>></CODE></FONT></TD> 195<TD><CODE><B><A HREF="/com/sleepycat/persist/EntityJoin.html#entities(com.sleepycat.db.Transaction, com.sleepycat.db.CursorConfig)">entities</A></B>(<A HREF="/com/sleepycat/db/Transaction.html" title="class in com.sleepycat.db">Transaction</A> txn, 196 <A HREF="/com/sleepycat/db/CursorConfig.html" title="class in com.sleepycat.db">CursorConfig</A> config)</CODE> 197 198<BR> 199 Opens a cursor that returns the entities qualifying for the join.</TD> 200</TR> 201<TR BGCOLOR="white" CLASS="TableRowColor"> 202<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> 203<CODE> <A HREF="/com/sleepycat/persist/ForwardCursor.html" title="interface in com.sleepycat.persist">ForwardCursor</A><<A HREF="/com/sleepycat/persist/EntityJoin.html" title="type parameter in EntityJoin">PK</A>></CODE></FONT></TD> 204<TD><CODE><B><A HREF="/com/sleepycat/persist/EntityJoin.html#keys()">keys</A></B>()</CODE> 205 206<BR> 207 Opens a cursor that returns the primary keys of entities qualifying for 208 the join.</TD> 209</TR> 210<TR BGCOLOR="white" CLASS="TableRowColor"> 211<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> 212<CODE> <A HREF="/com/sleepycat/persist/ForwardCursor.html" title="interface in com.sleepycat.persist">ForwardCursor</A><<A HREF="/com/sleepycat/persist/EntityJoin.html" title="type parameter in EntityJoin">PK</A>></CODE></FONT></TD> 213<TD><CODE><B><A HREF="/com/sleepycat/persist/EntityJoin.html#keys(com.sleepycat.db.Transaction, com.sleepycat.db.CursorConfig)">keys</A></B>(<A HREF="/com/sleepycat/db/Transaction.html" title="class in com.sleepycat.db">Transaction</A> txn, 214 <A HREF="/com/sleepycat/db/CursorConfig.html" title="class in com.sleepycat.db">CursorConfig</A> config)</CODE> 215 216<BR> 217 Opens a cursor that returns the primary keys of entities qualifying for 218 the join.</TD> 219</TR> 220</TABLE> 221 <A NAME="methods_inherited_from_class_java.lang.Object"><!-- --></A> 222<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""> 223<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"> 224<TH ALIGN="left"><B>Methods inherited from class java.lang.<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A></B></TH> 225</TR> 226<TR BGCOLOR="white" CLASS="TableRowColor"> 227<TD><CODE><A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html#clone()" title="class or interface in java.lang">clone</A>, <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html#equals(java.lang.Object)" title="class or interface in java.lang">equals</A>, <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html#finalize()" title="class or interface in java.lang">finalize</A>, <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html#getClass()" title="class or interface in java.lang">getClass</A>, <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html#hashCode()" title="class or interface in java.lang">hashCode</A>, <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html#notify()" title="class or interface in java.lang">notify</A>, <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html#notifyAll()" title="class or interface in java.lang">notifyAll</A>, <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html#toString()" title="class or interface in java.lang">toString</A>, <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html#wait()" title="class or interface in java.lang">wait</A>, <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html#wait(long)" title="class or interface in java.lang">wait</A>, <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html#wait(long, int)" title="class or interface in java.lang">wait</A></CODE></TD> 228</TR> 229</TABLE> 230 231<P> 232 233<!-- ========= CONSTRUCTOR DETAIL ======== --> 234 235<A NAME="constructor_detail"><!-- --></A> 236<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""> 237<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"> 238<TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2"> 239<B>Constructor Detail</B></FONT></TH> 240</TR> 241</TABLE> 242 243<A NAME="EntityJoin(com.sleepycat.persist.PrimaryIndex)"><!-- --></A><H3> 244EntityJoin</H3> 245<PRE> 246public <B>EntityJoin</B>(<A HREF="/com/sleepycat/persist/PrimaryIndex.html" title="class in com.sleepycat.persist">PrimaryIndex</A><<A HREF="/com/sleepycat/persist/EntityJoin.html" title="type parameter in EntityJoin">PK</A>,<A HREF="/com/sleepycat/persist/EntityJoin.html" title="type parameter in EntityJoin">E</A>> index)</PRE> 247<DL> 248<DD>Creates a join object for a given primary index. 249<P> 250<DL> 251<DT><B>Parameters:</B><DD><CODE>index</CODE> - the primary index on which the join will operate.</DL> 252</DL> 253 254<!-- ============ METHOD DETAIL ========== --> 255 256<A NAME="method_detail"><!-- --></A> 257<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""> 258<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"> 259<TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2"> 260<B>Method Detail</B></FONT></TH> 261</TR> 262</TABLE> 263 264<A NAME="addCondition(com.sleepycat.persist.SecondaryIndex,java.lang.Object)"><!-- --></A><A NAME="addCondition(com.sleepycat.persist.SecondaryIndex, SK)"><!-- --></A><H3> 265addCondition</H3> 266<PRE> 267public <SK> void <B>addCondition</B>(<A HREF="/com/sleepycat/persist/SecondaryIndex.html" title="class in com.sleepycat.persist">SecondaryIndex</A><SK,<A HREF="/com/sleepycat/persist/EntityJoin.html" title="type parameter in EntityJoin">PK</A>,<A HREF="/com/sleepycat/persist/EntityJoin.html" title="type parameter in EntityJoin">E</A>> index, 268 SK key)</PRE> 269<DL> 270<DD>Adds a secondary key condition to the equality join. Only entities 271 having the given key value in the given secondary index will be returned 272 by the join operation. 273<P> 274<DD><DL> 275<DT><B>Parameters:</B><DD><CODE>index</CODE> - the secondary index containing the given key value.<DD><CODE>key</CODE> - the key value to match during the join.</DL> 276</DD> 277</DL> 278<HR> 279 280<A NAME="entities()"><!-- --></A><H3> 281entities</H3> 282<PRE> 283public <A HREF="/com/sleepycat/persist/ForwardCursor.html" title="interface in com.sleepycat.persist">ForwardCursor</A><<A HREF="/com/sleepycat/persist/EntityJoin.html" title="type parameter in EntityJoin">E</A>> <B>entities</B>() 284 throws <A HREF="/com/sleepycat/db/DatabaseException.html" title="class in com.sleepycat.db">DatabaseException</A></PRE> 285<DL> 286<DD>Opens a cursor that returns the entities qualifying for the join. The 287 join operation is performed as the returned cursor is accessed. 288 289 <p>The operations performed with the cursor will not be transaction 290 protected, and <A HREF="/com/sleepycat/db/CursorConfig.html#DEFAULT"><CODE>CursorConfig.DEFAULT</CODE></A> is used implicitly.</p> 291<P> 292<DD><DL> 293 294<DT><B>Returns:</B><DD>the cursor. 295<DT><B>Throws:</B> 296<DD><CODE><A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/IllegalStateException.html" title="class or interface in java.lang">IllegalStateException</A></CODE> - if less than two conditions were added. 297<DD><CODE><A HREF="/com/sleepycat/db/DatabaseException.html" title="class in com.sleepycat.db">DatabaseException</A></CODE></DL> 298</DD> 299</DL> 300<HR> 301 302<A NAME="entities(com.sleepycat.db.Transaction, com.sleepycat.db.CursorConfig)"><!-- --></A><H3> 303entities</H3> 304<PRE> 305public <A HREF="/com/sleepycat/persist/ForwardCursor.html" title="interface in com.sleepycat.persist">ForwardCursor</A><<A HREF="/com/sleepycat/persist/EntityJoin.html" title="type parameter in EntityJoin">E</A>> <B>entities</B>(<A HREF="/com/sleepycat/db/Transaction.html" title="class in com.sleepycat.db">Transaction</A> txn, 306 <A HREF="/com/sleepycat/db/CursorConfig.html" title="class in com.sleepycat.db">CursorConfig</A> config) 307 throws <A HREF="/com/sleepycat/db/DatabaseException.html" title="class in com.sleepycat.db">DatabaseException</A></PRE> 308<DL> 309<DD>Opens a cursor that returns the entities qualifying for the join. The 310 join operation is performed as the returned cursor is accessed. 311<P> 312<DD><DL> 313<DT><B>Parameters:</B><DD><CODE>txn</CODE> - the transaction used to protect all operations performed with 314 the cursor, or null if the operations should not be transaction 315 protected.<DD><CODE>config</CODE> - the cursor configuration that determines the default lock 316 mode used for all cursor operations, or null to implicitly use <A HREF="/com/sleepycat/db/CursorConfig.html#DEFAULT"><CODE>CursorConfig.DEFAULT</CODE></A>. 317<DT><B>Returns:</B><DD>the cursor. 318<DT><B>Throws:</B> 319<DD><CODE><A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/IllegalStateException.html" title="class or interface in java.lang">IllegalStateException</A></CODE> - if less than two conditions were added. 320<DD><CODE><A HREF="/com/sleepycat/db/DatabaseException.html" title="class in com.sleepycat.db">DatabaseException</A></CODE></DL> 321</DD> 322</DL> 323<HR> 324 325<A NAME="keys()"><!-- --></A><H3> 326keys</H3> 327<PRE> 328public <A HREF="/com/sleepycat/persist/ForwardCursor.html" title="interface in com.sleepycat.persist">ForwardCursor</A><<A HREF="/com/sleepycat/persist/EntityJoin.html" title="type parameter in EntityJoin">PK</A>> <B>keys</B>() 329 throws <A HREF="/com/sleepycat/db/DatabaseException.html" title="class in com.sleepycat.db">DatabaseException</A></PRE> 330<DL> 331<DD>Opens a cursor that returns the primary keys of entities qualifying for 332 the join. The join operation is performed as the returned cursor is 333 accessed. 334 335 <p>The operations performed with the cursor will not be transaction 336 protected, and <A HREF="/com/sleepycat/db/CursorConfig.html#DEFAULT"><CODE>CursorConfig.DEFAULT</CODE></A> is used implicitly.</p> 337<P> 338<DD><DL> 339 340<DT><B>Returns:</B><DD>the cursor. 341<DT><B>Throws:</B> 342<DD><CODE><A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/IllegalStateException.html" title="class or interface in java.lang">IllegalStateException</A></CODE> - if less than two conditions were added. 343<DD><CODE><A HREF="/com/sleepycat/db/DatabaseException.html" title="class in com.sleepycat.db">DatabaseException</A></CODE></DL> 344</DD> 345</DL> 346<HR> 347 348<A NAME="keys(com.sleepycat.db.Transaction, com.sleepycat.db.CursorConfig)"><!-- --></A><H3> 349keys</H3> 350<PRE> 351public <A HREF="/com/sleepycat/persist/ForwardCursor.html" title="interface in com.sleepycat.persist">ForwardCursor</A><<A HREF="/com/sleepycat/persist/EntityJoin.html" title="type parameter in EntityJoin">PK</A>> <B>keys</B>(<A HREF="/com/sleepycat/db/Transaction.html" title="class in com.sleepycat.db">Transaction</A> txn, 352 <A HREF="/com/sleepycat/db/CursorConfig.html" title="class in com.sleepycat.db">CursorConfig</A> config) 353 throws <A HREF="/com/sleepycat/db/DatabaseException.html" title="class in com.sleepycat.db">DatabaseException</A></PRE> 354<DL> 355<DD>Opens a cursor that returns the primary keys of entities qualifying for 356 the join. The join operation is performed as the returned cursor is 357 accessed. 358<P> 359<DD><DL> 360<DT><B>Parameters:</B><DD><CODE>txn</CODE> - the transaction used to protect all operations performed with 361 the cursor, or null if the operations should not be transaction 362 protected.<DD><CODE>config</CODE> - the cursor configuration that determines the default lock 363 mode used for all cursor operations, or null to implicitly use <A HREF="/com/sleepycat/db/CursorConfig.html#DEFAULT"><CODE>CursorConfig.DEFAULT</CODE></A>. 364<DT><B>Returns:</B><DD>the cursor. 365<DT><B>Throws:</B> 366<DD><CODE><A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/IllegalStateException.html" title="class or interface in java.lang">IllegalStateException</A></CODE> - if less than two conditions were added. 367<DD><CODE><A HREF="/com/sleepycat/db/DatabaseException.html" title="class in com.sleepycat.db">DatabaseException</A></CODE></DL> 368</DD> 369</DL> 370<!-- ========= END OF CLASS DATA ========= --> 371<HR> 372 373 374<!-- ======= START OF BOTTOM NAVBAR ====== --> 375<A NAME="navbar_bottom"><!-- --></A> 376<A HREF="#skip-navbar_bottom" title="Skip navigation links"></A> 377<TABLE BORDER="0" WIDTH="100%" CELLPADDING="1" CELLSPACING="0" SUMMARY=""> 378<TR> 379<TD COLSPAN=2 BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> 380<A NAME="navbar_bottom_firstrow"><!-- --></A> 381<TABLE BORDER="0" CELLPADDING="0" CELLSPACING="3" SUMMARY=""> 382 <TR ALIGN="center" VALIGN="top"> 383 <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="/overview-summary.html"><FONT CLASS="NavBarFont1"><B>Overview</B></FONT></A> </TD> 384 <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-summary.html"><FONT CLASS="NavBarFont1"><B>Package</B></FONT></A> </TD> 385 <TD BGCOLOR="#FFFFFF" CLASS="NavBarCell1Rev"> <FONT CLASS="NavBarFont1Rev"><B>Class</B></FONT> </TD> 386 <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="class-use/EntityJoin.html"><FONT CLASS="NavBarFont1"><B>Use</B></FONT></A> </TD> 387 <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-tree.html"><FONT CLASS="NavBarFont1"><B>Tree</B></FONT></A> </TD> 388 <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="/deprecated-list.html"><FONT CLASS="NavBarFont1"><B>Deprecated</B></FONT></A> </TD> 389 <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="/index-all.html"><FONT CLASS="NavBarFont1"><B>Index</B></FONT></A> </TD> 390 <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="/help-doc.html"><FONT CLASS="NavBarFont1"><B>Help</B></FONT></A> </TD> 391 </TR> 392</TABLE> 393</TD> 394<TD ALIGN="right" VALIGN="top" ROWSPAN=3><EM> 395<b>Berkeley DB</b><br><font size="-1"> version 4.7.25</font></EM> 396</TD> 397</TR> 398 399<TR> 400<TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> 401 <A HREF="/com/sleepycat/persist/EntityIndex.html" title="interface in com.sleepycat.persist"><B>PREV CLASS</B></A> 402 <A HREF="/com/sleepycat/persist/EntityStore.html" title="class in com.sleepycat.persist"><B>NEXT CLASS</B></A></FONT></TD> 403<TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> 404 <A HREF="/index.html?com/sleepycat/persist/EntityJoin.html" target="_top"><B>FRAMES</B></A> 405 <A HREF="EntityJoin.html" target="_top"><B>NO FRAMES</B></A> 406 <SCRIPT type="text/javascript"> 407 <!-- 408 if(window==top) { 409 document.writeln('<A HREF="/allclasses-noframe.html"><B>All Classes</B></A>'); 410 } 411 //--> 412</SCRIPT> 413<NOSCRIPT> 414 <A HREF="/allclasses-noframe.html"><B>All Classes</B></A> 415</NOSCRIPT> 416 417 418</FONT></TD> 419</TR> 420<TR> 421<TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2"> 422 SUMMARY: NESTED | FIELD | <A HREF="#constructor_summary">CONSTR</A> | <A HREF="#method_summary">METHOD</A></FONT></TD> 423<TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2"> 424DETAIL: FIELD | <A HREF="#constructor_detail">CONSTR</A> | <A HREF="#method_detail">METHOD</A></FONT></TD> 425</TR> 426</TABLE> 427<A NAME="skip-navbar_bottom"></A> 428<!-- ======== END OF BOTTOM NAVBAR ======= --> 429 430<HR> 431<font size=1>Copyright (c) 1996,2008 Oracle. 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