query_criteria.po

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msgid ""
msgstr ""
"Project-Id-Version: PACKAGE VERSION\n"
"Report-Msgid-Bugs-To: http://bugs.kde.org\n"
"POT-Creation-Date: 2007-10-25 01:01+0000\n"
"PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
"Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
"Language-Team: LANGUAGE <[e-mail]>\n"
"MIME-Version: 1.0\n"
"Content-Type: text/plain; charset=UTF-8\n"
"Content-Transfer-Encoding: 8bit\n"

#. Tag: title
#: query_criteria.xml:5
#, no-c-format
msgid "Criteria Queries"
msgstr "条件查询(Criteria Queries)"

#. Tag: para
#: query_criteria.xml:7
#, no-c-format
msgid "Hibernate features an intuitive, extensible criteria query API."
msgstr "具有一个直观的、可扩展的条件查询API是Hibernate的特色。"

#. Tag: title
#: query_criteria.xml:12
#, no-c-format
msgid "Creating a <literal>Criteria</literal> instance"
msgstr "创建一个<literal>Criteria</literal> 实例"

#. Tag: para
#: query_criteria.xml:14
#, no-c-format
msgid ""
"The interface <literal>org.hibernate.Criteria</literal> represents a query "
"against a particular persistent class. The <literal>Session</literal> is a "
"factory for <literal>Criteria</literal> instances."
msgstr ""
"<literal>org.hibernate.Criteria</literal>接口表示特定持久类的一个查询。"
"<literal>Session</literal>是 <literal>Criteria</literal>实例的工厂。"

#. Tag: programlisting
#: query_criteria.xml:20
#, no-c-format
msgid ""
"<![CDATA[Criteria crit = sess.createCriteria(Cat.class);\n"
"crit.setMaxResults(50);\n"
"List cats = crit.list();]]>"
msgstr ""

#. Tag: title
#: query_criteria.xml:25
#, no-c-format
msgid "Narrowing the result set"
msgstr "限制结果集内容"

#. Tag: para
#: query_criteria.xml:27
#, no-c-format
msgid ""
"An individual query criterion is an instance of the interface <literal>org."
"hibernate.criterion.Criterion</literal>. The class <literal>org.hibernate."
"criterion.Restrictions</literal> defines factory methods for obtaining "
"certain built-in <literal>Criterion</literal> types."
msgstr ""
"一个单独的查询条件是<literal>org.hibernate.criterion.Criterion</literal> 接口"
"的一个实例。<literal>org.hibernate.criterion.Restrictions</literal>类 定义了"
"获得某些内置<literal>Criterion</literal>类型的工厂方法。"

#. Tag: programlisting
#: query_criteria.xml:35
#, no-c-format
msgid ""
"<![CDATA[List cats = sess.createCriteria(Cat.class)\n"
"    .add( Restrictions.like(\"name\", \"Fritz%\") )\n"
"    .add( Restrictions.between(\"weight\", minWeight, maxWeight) )\n"
"    .list();]]>"
msgstr ""

#. Tag: para
#: query_criteria.xml:37
#, no-c-format
msgid "Restrictions may be grouped logically."
msgstr "约束可以按逻辑分组。"

#. Tag: programlisting
#: query_criteria.xml:41
#, no-c-format
msgid ""
"<![CDATA[List cats = sess.createCriteria(Cat.class)\n"
"    .add( Restrictions.like(\"name\", \"Fritz%\") )\n"
"    .add( Restrictions.or(\n"
"        Restrictions.eq( \"age\", new Integer(0) ),\n"
"        Restrictions.isNull(\"age\")\n"
"    ) )\n"
"    .list();]]>"
msgstr ""

#. Tag: programlisting
#: query_criteria.xml:43
#, no-c-format
msgid ""
"<![CDATA[List cats = sess.createCriteria(Cat.class)\n"
"    .add( Restrictions.in( \"name\", new String[] { \"Fritz\", \"Izi\", \"Pk"
"\" } ) )\n"
"    .add( Restrictions.disjunction()\n"
"        .add( Restrictions.isNull(\"age\") )\n"
"        .add( Restrictions.eq(\"age\", new Integer(0) ) )\n"
"        .add( Restrictions.eq(\"age\", new Integer(1) ) )\n"
"        .add( Restrictions.eq(\"age\", new Integer(2) ) )\n"
"    ) )\n"
"    .list();]]>"
msgstr ""

#. Tag: para
#: query_criteria.xml:45
#, no-c-format
msgid ""
"There are quite a range of built-in criterion types (<literal>Restrictions</"
"literal> subclasses), but one that is especially useful lets you specify SQL "
"directly."
msgstr ""
"Hibernate提供了相当多的内置criterion类型(<literal>Restrictions</literal> 子"
"类), 但是尤其有用的是可以允许你直接使用SQL。"

#. Tag: programlisting
#: query_criteria.xml:50
#, no-c-format
msgid ""
"<![CDATA[List cats = sess.createCriteria(Cat.class)\n"
"    .add( Restrictions.sqlRestriction(\"lower({alias}.name) like lower(?)\", "
"\"Fritz%\", Hibernate.STRING) )\n"
"    .list();]]>"
msgstr ""

#. Tag: para
#: query_criteria.xml:52
#, no-c-format
msgid ""
"The <literal>{alias}</literal> placeholder with be replaced by the row alias "
"of the queried entity."
msgstr "<literal>{alias}</literal>占位符应当被替换为被查询实体的列别名。"

#. Tag: para
#: query_criteria.xml:57
#, no-c-format
msgid ""
"An alternative approach to obtaining a criterion is to get it from a "
"<literal>Property</literal> instance. You can create a <literal>Property</"
"literal> by calling <literal>Property.forName()</literal>."
msgstr ""
"<literal>Property</literal>实例是获得一个条件的另外一种途径。你可以通过调用"
"<literal>Property.forName()</literal> 创建一个<literal>Property</literal>。"

#. Tag: programlisting
#: query_criteria.xml:63
#, no-c-format
msgid ""
"<![CDATA[\n"
"Property age = Property.forName(\"age\");\n"
"List cats = sess.createCriteria(Cat.class)\n"
"    .add( Restrictions.disjunction()\n"
"        .add( age.isNull() )\n"
"        .add( age.eq( new Integer(0) ) )\n"
"        .add( age.eq( new Integer(1) ) )\n"
"        .add( age.eq( new Integer(2) ) )\n"
"    ) )\n"
"    .add( Property.forName(\"name\").in( new String[] { \"Fritz\", \"Izi\", "
"\"Pk\" } ) )\n"
"    .list();]]>"
msgstr ""

#. Tag: title
#: query_criteria.xml:68
#, no-c-format
msgid "Ordering the results"
msgstr "结果集排序"

#. Tag: para
#: query_criteria.xml:70
#, no-c-format
msgid ""
"You may order the results using <literal>org.hibernate.criterion.Order</"
"literal>."
msgstr ""
"你可以使用<literal>org.hibernate.criterion.Order</literal>来为查询结果排序。"

#. Tag: programlisting
#: query_criteria.xml:74
#, no-c-format
msgid ""
"<![CDATA[List cats = sess.createCriteria(Cat.class)\n"
"    .add( Restrictions.like(\"name\", \"F%\")\n"
"    .addOrder( Order.asc(\"name\") )\n"
"    .addOrder( Order.desc(\"age\") )\n"
"    .setMaxResults(50)\n"
"    .list();]]>"
msgstr ""

#. Tag: programlisting
#: query_criteria.xml:76
#, no-c-format
msgid ""
"<![CDATA[List cats = sess.createCriteria(Cat.class)\n"
"    .add( Property.forName(\"name\").like(\"F%\") )\n"
"    .addOrder( Property.forName(\"name\").asc() )\n"
"    .addOrder( Property.forName(\"age\").desc() )\n"
"    .setMaxResults(50)\n"
"    .list();]]>"
msgstr ""

#. Tag: title
#: query_criteria.xml:81
#, no-c-format
msgid "Associations"
msgstr "关联"

#. Tag: para
#: query_criteria.xml:83
#, no-c-format
msgid ""
"You may easily specify constraints upon related entities by navigating "
"associations using <literal>createCriteria()</literal>."
msgstr ""
"你可以使用<literal>createCriteria()</literal>非常容易的在互相关联的实体间建"
"立 约束。"

#. Tag: programlisting
#: query_criteria.xml:88
#, no-c-format
msgid ""
"<![CDATA[List cats = sess.createCriteria(Cat.class)\n"
"    .add( Restrictions.like(\"name\", \"F%\") )\n"
"    .createCriteria(\"kittens\")\n"
"        .add( Restrictions.like(\"name\", \"F%\") )\n"
"    .list();]]>"
msgstr ""

#. Tag: para
#: query_criteria.xml:90
#, no-c-format
msgid ""
"note that the second <literal>createCriteria()</literal> returns a new "
"instance of <literal>Criteria</literal>, which refers to the elements of the "
"<literal>kittens</literal> collection."
msgstr ""
"注意第二个 <literal>createCriteria()</literal>返回一个新的 "
"<literal>Criteria</literal>实例，该实例引用<literal>kittens</literal> 集合中"
"的元素。"

#. Tag: para
#: query_criteria.xml:96
#, no-c-format
msgid "The following, alternate form is useful in certain circumstances."
msgstr "接下来，替换形态在某些情况下也是很有用的。"

#. Tag: programlisting
#: query_criteria.xml:100
#, no-c-format
msgid ""
"<![CDATA[List cats = sess.createCriteria(Cat.class)\n"
"    .createAlias(\"kittens\", \"kt\")\n"
"    .createAlias(\"mate\", \"mt\")\n"
"    .add( Restrictions.eqProperty(\"kt.name\", \"mt.name\") )\n"
"    .list();]]>"
msgstr ""

#. Tag: para
#: query_criteria.xml:102
#, no-c-format
msgid ""
"(<literal>createAlias()</literal> does not create a new instance of "
"<literal>Criteria</literal>.)"
msgstr ""
"(<literal>createAlias()</literal>并不创建一个新的 <literal>Criteria</literal>"
"实例。)"

#. Tag: para
#: query_criteria.xml:107
#, no-c-format
msgid ""
"Note that the kittens collections held by the <literal>Cat</literal> "
"instances returned by the previous two queries are <emphasis>not</emphasis> "
"pre-filtered by the criteria! If you wish to retrieve just the kittens that "
"match the criteria, you must use a <literal>ResultTransformer</literal>."
msgstr ""
"<literal>Cat</literal>实例所保存的之前两次查询所返回的kittens集合是 "
"<emphasis>没有</emphasis>被条件预过滤的。如果你希望只获得符合条件的kittens， "
"你必须使用<literal>ResultTransformer</literal>。"

#. Tag: programlisting
#: query_criteria.xml:114
#, no-c-format
msgid ""
"<![CDATA[List cats = sess.createCriteria(Cat.class)\n"
"    .createCriteria(\"kittens\", \"kt\")\n"
"        .add( Restrictions.eq(\"name\", \"F%\") )\n"
"    .setResultTransformer(Criteria.ALIAS_TO_ENTITY_MAP)\n"
"    .list();\n"
"Iterator iter = cats.iterator();\n"
"while ( iter.hasNext() ) {\n"
"    Map map = (Map) iter.next();\n"
"    Cat cat = (Cat) map.get(Criteria.ROOT_ALIAS);\n"
"    Cat kitten = (Cat) map.get(\"kt\");\n"
"}]]>"
msgstr ""

#. Tag: title
#: query_criteria.xml:119
#, no-c-format
msgid "Dynamic association fetching"
msgstr "动态关联抓取"

#. Tag: para
#: query_criteria.xml:121
#, no-c-format
msgid ""
"You may specify association fetching semantics at runtime using "
"<literal>setFetchMode()</literal>."
msgstr ""
"你可以使用<literal>setFetchMode()</literal>在运行时定义动态关联抓取的语义。"

#. Tag: programlisting
#: query_criteria.xml:126
#, no-c-format
msgid ""
"<![CDATA[List cats = sess.createCriteria(Cat.class)\n"
"    .add( Restrictions.like(\"name\", \"Fritz%\") )\n"
"    .setFetchMode(\"mate\", FetchMode.EAGER)\n"
"    .setFetchMode(\"kittens\", FetchMode.EAGER)\n"
"    .list();]]>"
msgstr ""

#. Tag: para
#: query_criteria.xml:128
#, no-c-format
msgid ""
"This query will fetch both <literal>mate</literal> and <literal>kittens</"
"literal> by outer join. See <xref linkend=\"performance-fetching\"/> for "
"more information."
msgstr ""
"这个查询可以通过外连接抓取<literal>mate</literal>和<literal>kittens</"
"literal>。 查看<xref linkend=\"performance-fetching\"/>可以获得更多信息。"

#. Tag: title
#: query_criteria.xml:136
#, no-c-format
msgid "Example queries"
msgstr "查询示例"

#. Tag: para
#: query_criteria.xml:138
#, no-c-format
msgid ""
"The class <literal>org.hibernate.criterion.Example</literal> allows you to "
"construct a query criterion from a given instance."
msgstr ""
"<literal>org.hibernate.criterion.Example</literal>类允许你通过一个给定实例 构"
"建一个条件查询。"

#. Tag: programlisting
#: query_criteria.xml:143
#, no-c-format
msgid ""
"<![CDATA[Cat cat = new Cat();\n"
"cat.setSex('F');\n"
"cat.setColor(Color.BLACK);\n"
"List results = session.createCriteria(Cat.class)\n"
"    .add( Example.create(cat) )\n"
"    .list();]]>"
msgstr ""

#. Tag: para
#: query_criteria.xml:145
#, no-c-format
msgid ""