(涓錛塇ibernate鐨勪簩綰х紦瀛樼瓥鐣ョ殑涓鑸繃紼嬪涓嬶細(xì)
1) 鏉′歡鏌ヨ鐨勬椂鍊欙紝鎬繪槸鍙戝嚭涓鏉elect * from table_name where …. 錛堥夋嫨鎵鏈夊瓧孌碉級(jí)榪欐牱鐨凷QL璇彞鏌ヨ鏁版嵁搴擄紝涓嬈¤幏寰楁墍鏈夌殑鏁版嵁瀵硅薄銆?
2) 鎶婅幏寰楃殑鎵鏈夋暟鎹璞℃牴鎹甀D鏀懼叆鍒扮浜岀駭緙撳瓨涓?
3) 褰揌ibernate鏍規(guī)嵁ID璁塊棶鏁版嵁瀵硅薄鐨勬椂鍊欙紝棣栧厛浠嶴ession涓綰х紦瀛樹腑鏌ワ紱鏌ヤ笉鍒幫紝濡傛灉閰嶇疆浜?jiǎn)浜尵Uх紦瀛橈紝閭ｄ箞浠庝簩綰х紦瀛樹腑鏌ワ紱鏌ヤ笉鍒幫紝鍐嶆煡璇㈡暟鎹簱錛屾妸緇撴灉鎸夌収ID鏀懼叆鍒扮紦瀛樸?
4) 鍒犻櫎銆佹洿鏂般佸鍔犳暟鎹殑鏃跺欙紝鍚屾椂鏇存柊緙撳瓨銆?br />
Hibernate鐨勪簩綰х紦瀛樼瓥鐣ワ紝鏄拡瀵逛簬ID鏌ヨ鐨勭紦瀛樼瓥鐣ワ紝瀵逛簬鏉′歡鏌ヨ鍒欐鏃犱綔鐢ㄣ備負(fù)姝わ紝Hibernate鎻愪緵浜?jiǎn)閽堝?guī)潯浠舵煡璇㈢殑Query Cache銆?
錛堜簩錛変粈涔堟牱鐨勬暟鎹傚悎瀛樻斁鍒扮浜岀駭緙撳瓨涓紵
1 寰堝皯琚慨鏀圭殑鏁版嵁
2 涓嶆槸寰堥噸瑕佺殑鏁版嵁錛屽厑璁稿嚭鐜板伓灝?dāng)迤堝彂鐨勬暟鎹?
3 涓嶄細(xì)琚茍鍙戣闂殑鏁版嵁
4 鍙傝冩暟鎹?鎸囩殑鏄緵搴旂敤鍙傝冪殑甯擱噺鏁版嵁錛屽畠鐨勫疄渚嬫暟鐩湁闄愶紝瀹冪殑瀹炰緥浼?xì)琚澶氬叾浠柧c葷殑瀹炰緥寮曠敤錛屽疄渚嬫瀬灝戞垨鑰呬粠鏉ヤ笉浼?xì)琚慨鏀广?/p>
錛堜笁錛変笉閫傚悎瀛樻斁鍒扮浜岀駭緙撳瓨鐨勬暟鎹紵
1 緇忓父琚慨鏀圭殑鏁版嵁
2 璐㈠姟鏁版嵁錛岀粷瀵逛笉鍏佽鍑虹幇騫跺彂
3 涓庡叾浠栧簲鐢ㄥ叡浜殑鏁版嵁銆?
瀹炶返閮ㄥ垎錛?
浣跨敤EhCache閰嶇疆浜岀駭緙撳瓨錛?br />
閰嶇疆鍑嗗錛?br />
1)鎶奺hcache-1.2.3.jar鍔犲叆鍒板綋鍓嶅簲鐢ㄧ殑classpath涓?
2)鍦╤ibernate.cfg.xml鏂囦歡涓姞鍏hCache緙撳瓨鎻掍歡鐨勬彁渚涚被銆?
-
- <property name="hibernate.cache.provider_class">
- org.hibernate.cache.EhCacheProvider
- </property>
3)鎸庤礉ehcache.xml鏂囦歡鍒扮被璺緞(欏圭洰宸ョ▼鐨剆rc鐩綍涓?錛岃繖涓枃浠跺湪Hibernate瀹夎鐩綍鐨別tc涓嬨?br />
閰嶇疆姝ラ錛?br />
Hibernate鍏佽鍦ㄧ被鍜岄泦鍚堢殑綺掑害涓婅緗浜岀駭緙撳瓨銆傚湪鏄犲皠鏂囦歡涓紝<class>鍜?lt;set>鍏冪礌閮芥湁涓涓?lt;cache>瀛愬厓绱狅紝榪欎釜瀛愬厓绱犵敤鏉ラ厤緗簩綰х紦瀛樸?
紺轟緥錛氫互category(浜у搧綾誨埆)鍜宲roduct(浜у搧)鐨勬槧灝勪負(fù)渚嬶細(xì)
1) 淇敼瑕侀厤緗紦瀛樼殑閭ｄ釜鎸佷箙鍖栫被鐨勫璞″叧緋繪槧灝勬枃浠訛細(xì)
Category.hbm.xml
|
<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"
<hibernate-mapping>
<class name="org.qiujy.domain.cachedemo.Category" table="categories">
<!鈥?nbsp;
閰嶇疆緙撳瓨,蹇呴』绱ц窡鍦╟lass鍏冪礌鍚庨潰
瀵圭紦瀛樹腑鐨凜ategory瀵硅薄閲囩敤璇誨啓鍨嬬殑騫跺彂璁塊棶絳栫暐
-->
<cache usage="read-write"/>
<id name="id" type="java.lang.Long">
<column name="id" />
<generator class="native" />
</id>
<!-- 閰嶇疆鐗堟湰鍙?蹇呴』绱ц窡鍦╥d鍏冪礌鍚庨潰 -->
<version name="version" column="version" type="java.lang.Long" />
<property name="name" type="java.lang.String">
<column name="name" length="32" not-null="true"/>
</property>
<property name="description" type="java.lang.String">
<column name="description" length="255"/>
</property>
<set name="products" table="products" cascade="all" inverse="true">
<!-- Hibernate鍙細(xì)緙撳瓨瀵硅薄鐨勭畝鍗曞睘鎬х殑鍊?
瑕佺紦瀛橀泦鍚堝睘鎬?蹇呴』鍦ㄩ泦鍚堝厓绱犱腑涔熷姞鍏?lt;cache>瀛愬厓绱?nbsp;
鑰孒ibernate浠呬粎鏄妸涓庡綋鍓嶆寔涔呭璞″叧鑱旂殑瀵硅薄鐨凮ID瀛樻斁鍒扮紦瀛樹腑銆?nbsp;
濡傛灉甯屾湜鎶婃暣涓叧鑱旂殑瀵硅薄鐨勬墍鏈夋暟鎹兘瀛樺叆緙撳瓨,
鍒欒鍦ㄧ浉搴斿叧鑱旂殑瀵硅薄鐨勬槧灝勬枃浠朵腑閰嶇疆<cache>鍏冪礌
-->
<cache usage="read-write"/>
<key column="categoryId" not-null="true"/>
<one-to-many class="org.qiujy.domain.cachedemo.Product"/>
</set>
</class>
</hibernate-mapping>
|
Product.hbm.xml
<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"
<hibernate-mapping>
<class name="org.qiujy.domain.cachedemo.Product" table="products">
<cache usage="read-write"/>
<id name="id" type="java.lang.Long">
<column name="id" />
<generator class="native" />
</id>
<!-- 閰嶇疆鐗堟湰鍙?蹇呴』绱ц窡鍦╥d鍏冪礌鍚庨潰 -->
<version name="version" column="version" type="java.lang.Long" />
<property name="name" type="java.lang.String">
<column name="name" length="32" not-null="true"/>
</property>
<property name="description" type="java.lang.String">
<column name="description" length="255"/>
</property>
<property name="unitCost" type="java.lang.Double">
<column name="unitCost" />
</property>
<property name="pubTime" type="java.util.Date">
<column name="pubTime" not-null="true" />
</property>
<many-to-one name="category"
column="categoryId"
class="org.qiujy.domain.cachedemo.Category"
cascade="save-update"
not-null="true">
</many-to-one>
</class>
</hibernate-mapping> |
2)緙栬緫ehcache.xml鏂囦歡錛?/p>
<ehcache>
<diskStore path="c:\\ehcache\"/>
<defaultCache
maxElementsInMemory="10000"
eternal="false"
timeToIdleSeconds="120"
timeToLiveSeconds="120"
overflowToDisk="true"
/>
<!-- 璁劇疆Category綾葷殑緙撳瓨鐨勬暟鎹繃鏈熺瓥鐣?-->
<cache name="org.qiujy.domain.cachedemo.Category"
maxElementsInMemory="100"
eternal="true"
timeToIdleSeconds="0"
timeToLiveSeconds="0"
overflowToDisk="false"
/>
<!-- 璁劇疆Category綾葷殑products闆嗗悎鐨勭紦瀛樼殑鏁版嵁榪囨湡絳栫暐 -->
<cache name="org.qiujy.domain.cachedemo.Category.products"
maxElementsInMemory="500"
eternal="false"
timeToIdleSeconds="300"
timeToLiveSeconds="600"
overflowToDisk="true"
/>
<cache name="org.qiujy.domain.cachedemo.Product"
maxElementsInMemory="500"
eternal="false"
timeToIdleSeconds="300"
timeToLiveSeconds="600"
overflowToDisk="true"
/>
</ehcache> |
鍦⊿pring鎵樼鐨凥ibernate涓嬌鐢ㄤ簩綰х紦瀛?1錛庡湪spring鐨勯厤緗枃浠朵腑錛宧ibernate閮ㄥ垎鍔犲叆 xml 浠ｇ爜
org.hibernate.cache.EhCacheProvider
true
2.涓篐BM琛ㄨ緗甤ache絳栫暐 xml 浠ｇ爜 錛?鍦―AO涓紝璋冪敤find鏂規(guī)硶鏌ヨ涔嬪墠錛岃緗嬌鐢ㄧ紦瀛?Java浠ｇ爜 getHibernateTemplate().setCacheQueries(true); 琛ュ厖錛?濡傛灉涓嶈緗?#8220;鏌ヨ緙撳瓨”錛岄偅涔坔ibernate鍙細(xì)緙撳瓨浣跨敤load()鏂規(guī)硶鑾峰緱鐨勫崟涓寔涔呭寲瀵硅薄錛屽鏋滄兂緙撳瓨浣跨敤findall()銆乴ist()銆両terator()銆乧reateCriteria()銆乧reateQuery()絳夋柟娉曡幏寰楃殑鏁版嵁緇撴灉闆嗙殑璇濓紝灝遍渶瑕佽緗?hibernate.cache.use_query_cache true 鎵嶈銆?/p>
]]>