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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><!--NewPage--><HTML><HEAD><!-- Generated by javadoc (build 1.5.0_14) on Mon Jan 28 05:47:08 PST 2008 --><TITLE>javax.persistence (Java EE 5)</TITLE><META NAME="keywords" CONTENT="javax.persistence package"><LINK REL ="stylesheet" TYPE="text/css" HREF="../../stylesheet.css" TITLE="Style"><SCRIPT type="text/javascript">function windowTitle(){ parent.document.title="javax.persistence (Java EE 5)";}</SCRIPT><NOSCRIPT></NOSCRIPT></HEAD><BODY BGCOLOR="white" onload="windowTitle();"><!-- ========= START OF TOP NAVBAR ======= --><A NAME="navbar_top"><!-- --></A><A HREF="#skip-navbar_top" title="Skip navigation links"></A><TABLE BORDER="0" WIDTH="100%" CELLPADDING="1" CELLSPACING="0" SUMMARY=""><TR><TD COLSPAN=2 BGCOLOR="#EEEEFF" CLASS="NavBarCell1"><A NAME="navbar_top_firstrow"><!-- --></A><TABLE BORDER="0" CELLPADDING="0" CELLSPACING="3" SUMMARY=""> <TR ALIGN="center" VALIGN="top"> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../overview-summary.html"><FONT CLASS="NavBarFont1"><B>Overview</B></FONT></A> </TD> <TD BGCOLOR="#FFFFFF" CLASS="NavBarCell1Rev"> <FONT CLASS="NavBarFont1Rev"><B>Package</B></FONT> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <FONT CLASS="NavBarFont1">Class</FONT> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-tree.html"><FONT CLASS="NavBarFont1"><B>Tree</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../deprecated-list.html"><FONT CLASS="NavBarFont1"><B>Deprecated</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../index-all.html"><FONT CLASS="NavBarFont1"><B>Index</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../help-doc.html"><FONT CLASS="NavBarFont1"><B>Help</B></FONT></A> </TD> </TR></TABLE></TD><TD ALIGN="right" VALIGN="top" ROWSPAN=3><EM></EM></TD></TR><TR><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../javax/management/j2ee/statistics/package-summary.html"><B>PREV PACKAGE</B></A> <A HREF="../../javax/persistence/spi/package-summary.html"><B>NEXT PACKAGE</B></A></FONT></TD><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../index.html?javax/persistence/package-summary.html" target="_top"><B>FRAMES</B></A> <A HREF="package-summary.html" target="_top"><B>NO FRAMES</B></A> <SCRIPT type="text/javascript"> <!-- if(window==top) { document.writeln('<A HREF="../../allclasses-noframe.html"><B>All Classes</B></A>'); } //--></SCRIPT><NOSCRIPT> <A HREF="../../allclasses-noframe.html"><B>All Classes</B></A></NOSCRIPT></FONT></TD></TR></TABLE><A NAME="skip-navbar_top"></A><!-- ========= END OF TOP NAVBAR ========= --><HR><H2>Package javax.persistence</H2>The javax.persistence package contains the classes and interfaces thatdefine the contracts between a persistence provider and the managedclasses and the clients of the Java Persistence API.<P><B>See:</B><BR> <A HREF="#package_description"><B>Description</B></A><P><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2"><B>Interface Summary</B></FONT></TH></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD WIDTH="15%"><B><A HREF="../../javax/persistence/EntityManager.html" title="interface in javax.persistence">EntityManager</A></B></TD><TD>Interface used to interact with the persistence context.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD WIDTH="15%"><B><A HREF="../../javax/persistence/EntityManagerFactory.html" title="interface in javax.persistence">EntityManagerFactory</A></B></TD><TD>The <code>EntityManagerFactory</code> interface is used by the application to obtain an application-managed entity manager.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD WIDTH="15%"><B><A HREF="../../javax/persistence/EntityTransaction.html" title="interface in javax.persistence">EntityTransaction</A></B></TD><TD>The <code>EntityTransaction</code> interface is used to control resource transactions on resource-local entity managers.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD WIDTH="15%"><B><A HREF="../../javax/persistence/Query.html" title="interface in javax.persistence">Query</A></B></TD><TD>Interface used to control query execution.</TD></TR></TABLE> <P><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2"><B>Class Summary</B></FONT></TH></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD WIDTH="15%"><B><A HREF="../../javax/persistence/Persistence.html" title="class in javax.persistence">Persistence</A></B></TD><TD>Bootstrap class that is used to obtain an <A HREF="../../javax/persistence/EntityManagerFactory.html" title="interface in javax.persistence"><CODE>EntityManagerFactory</CODE></A>.</TD></TR></TABLE> <P><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2"><B>Enum Summary</B></FONT></TH></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD WIDTH="15%"><B><A HREF="../../javax/persistence/CascadeType.html" title="enum in javax.persistence">CascadeType</A></B></TD><TD>Defines the set of cascadable operations that are propagated to the associated entity.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD WIDTH="15%"><B><A HREF="../../javax/persistence/DiscriminatorType.html" title="enum in javax.persistence">DiscriminatorType</A></B></TD><TD>Defines supported types of the discriminator column.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD WIDTH="15%"><B><A HREF="../../javax/persistence/EnumType.html" title="enum in javax.persistence">EnumType</A></B></TD><TD>Defines mapping for the enumerated types.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD WIDTH="15%"><B><A HREF="../../javax/persistence/FetchType.html" title="enum in javax.persistence">FetchType</A></B></TD><TD>Defines strategies for fetching data from the database.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD WIDTH="15%"><B><A HREF="../../javax/persistence/FlushModeType.html" title="enum in javax.persistence">FlushModeType</A></B></TD><TD>Flush mode setting.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD WIDTH="15%"><B><A HREF="../../javax/persistence/GenerationType.html" title="enum in javax.persistence">GenerationType</A></B></TD><TD>Defines the types of primary key generation.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD WIDTH="15%"><B><A HREF="../../javax/persistence/InheritanceType.html" title="enum in javax.persistence">InheritanceType</A></B></TD><TD>Defines inheritance strategy options.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD WIDTH="15%"><B><A HREF="../../javax/persistence/LockModeType.html" title="enum in javax.persistence">LockModeType</A></B></TD><TD>Lock modes that can be specified by means of the <A HREF="../../javax/persistence/EntityManager.html#lock(java.lang.Object, javax.persistence.LockModeType)"><CODE>EntityManager.lock()</CODE></A> method.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD WIDTH="15%"><B><A HREF="../../javax/persistence/PersistenceContextType.html" title="enum in javax.persistence">PersistenceContextType</A></B></TD><TD>Specifies whether a transaction-scoped or extended persistence context is to be used in <A HREF="../../javax/persistence/PersistenceContext.html" title="annotation in javax.persistence"><CODE>PersistenceContext</CODE></A>.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD WIDTH="15%"><B><A HREF="../../javax/persistence/TemporalType.html" title="enum in javax.persistence">TemporalType</A></B></TD><TD>Type used to indicate a specific mapping of <A HREF="http://java.sun.com/j2se/1.5/docs/api/java/util/Date.html" title="class or interface in java.util"><CODE>Date</CODE></A> or <A HREF="http://java.sun.com/j2se/1.5/docs/api/java/util/Calendar.html" title="class or interface in java.util"><CODE>Calendar</CODE></A>.</TD></TR></TABLE> <P><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2"><B>Exception Summary</B></FONT></TH></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD WIDTH="15%"><B><A HREF="../../javax/persistence/EntityExistsException.html" title="class in javax.persistence">EntityExistsException</A></B></TD><TD>Thrown by the persistence provider when <A HREF="../../javax/persistence/EntityManager.html#persist(java.lang.Object)"><CODE>EntityManager.persist(Object)</CODE></A> is called and the entity already exists.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD WIDTH="15%"><B><A HREF="../../javax/persistence/EntityNotFoundException.html" title="class in javax.persistence">EntityNotFoundException</A></B></TD><TD>Thrown by the persistence provider when an entity reference obtained by <A HREF="../../javax/persistence/EntityManager.html#getReference(java.lang.Class, java.lang.Object)"><CODE>EntityManager.getReference(Class,Object)</CODE></A> is accessed but the entity does not exist.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD WIDTH="15%"><B><A HREF="../../javax/persistence/NonUniqueResultException.html" title="class in javax.persistence">NonUniqueResultException</A></B></TD><TD>Thrown by the persistence provider when <A HREF="../../javax/persistence/Query.html#getSingleResult()"><CODE>getSingleResult()</CODE></A> is executed on a query and there is more than one result from the query.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor">⌨️ 快捷键说明
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