How to declare useFetchSizeWithLongColumn=true with Hibernate? either under com.mchange.v2.c3p0.ComboPooledDataSource or org.apache.commons.dbcp.BasicDataSource in a properties bean configuration file?
I already tried:
<bean id="oracle_prop" lazy-init="false"
class="org.springframework.util.StringUtils"
factory-method="collectionToDelimitedString">
<constructor-arg index="0">
<list>
<value>oracle.jdbc.useFetchSizeWithLongColumn=true</value>
</list>
</constructor-arg>
<constructor-arg value=";" index="1" type="java.lang.String"/>
</bean>
<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource">
<property name="driverClassName" value="${database.driver}"/>
<property name="url" value="${database.url}"/>
<property name="username" value="${database.username}"/>
<property name="password" value="${database.password}"/>
<property name="initialSize" value="100"/>
<property name="maxIdle" value="100"/>
<property name="maxActive" value="1000"/>
<property name="connectionProperties" ref="oracle_prop"/>
</bean>
and
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource" destroy-method="close">
<property name="properties" ref="dataSourceProperties"></property>
<property name="driverClass" value="${database.driver}"/>
<property name="jdbcUrl" value="${database.url}"/>
<property name="user" value="${database.username}"/>
<property name="password" value="${database.password}"/>
<property name="initialPoolSize" value="100"/>
<property name="minPoolSize" value="100"/>
<property name="maxPoolSize" value="1000"/>
<property name="maxIdleTime" value="1800"/>
<property name="maxStatements" value="50"/>
</bean>
<bean id="dataSourceProperties" class="java.util.Properties">
<constructor-arg>
<props>
<prop key="oracle.jdbc.useFetchSizeWithLongColumn">true</prop>
</props>
</constructor-arg>
</bean>
and
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource" destroy-method="close">
<property name="driverClass" value="${database.driver}"/>
<property name="jdbcUrl" value="${database.url}"/>
<property name="properties">
<props>
<prop key="user">${database.username}</prop>
<prop key="password">${database.password}</prop>
<prop key="useFetchSizeWithLongColumn">true</prop>
</props>
</property>
<property name="initialPoolSize" value="100"/>
<property name="minPoolSize" value="100"/>
<property name="maxPoolSize" value="1000"/>
<property name="maxIdleTime" value="1800"/>
<property name="maxStatements" value="50"/>
</bean>
<property name="connectionProperties" ref="oracle_prop"/>
This will not work as it will try to bind "object" or "property" type object to connectionProperties where as setConnectionPropeties(String args) expect a string argument. Try changing ref with value and it should inject property as String data type. Else we can also pass properties delimited with ";".
Workaround
Look for all the long data types and change each manually.
Select * from user_tab_columns c where c.DATA_TYPE = 'LONG';
Sad to say useFetchSizeWithLongColumn will not work everytime.
So if you want to use this property, make sure that the LONG columns you are retrieving are not too big or you may run out of memory.
For JPA Hibernate, you could also add #Lob Annotation.
Related
I need to use 2 version of DB2Driver for my application. I am using spring to define dataSources. The path of two Libs are the same, the first dataSource needs driver version2 and second one needs version3. Is there any way to solve this problem?
<bean id="DataSource2" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
<property name="driverClassName" value="com.ibm.db2.jcc.DB2Driver"/>
<property name="url" value="yyy"/>
<property name="username" value="yyy"/>
<property name="password" value="yyy"/>
</bean>
<bean id="DataSource2" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
<property name="driverClassName" value="com.ibm.db2.jcc.DB2Driver"/>
<property name="url" value="xxx"/>
<property name="username" value="xxx"/>
<property name="password" value="xxx"/>
<property name="maxActive" value="100"/>
<property name="maxIdle" value="10"/>
<property name="minIdle" value="1"/>
<property name="maxWait" value="3000"/>
<property name="testOnBorrow" value="true"/>
<property name="testOnReturn" value="false"/>
<property name="testWhileIdle" value="true"/>
<property name="timeBetweenEvictionRunsMillis" value="10000"/>
<property name="numTestsPerEvictionRun" value="50"/>
<property name="minEvictableIdleTimeMillis" value="10000"/>
<property name="poolPreparedStatements" value="true"/>
</bean>
I have deployed two Spring roo application on Tomcat 7 server both have database connection while hitting any service of application I am getting below exception
Cannot create JDBC driver of class 'org.postgresql.Driver' for connect URL 'postgres://username:password#localhost:5432/db'
java.sql.SQLException: No suitable driver
at java.sql.DriverManager.getDriver(DriverManager.java:278)
at org.apache.commons.dbcp.BasicDataSource.createConnectionFactory(BasicDataSource.java:1437)
at org.apache.commons.dbcp.BasicDataSource.createDataSource(BasicDataSource.java:1371)
at org.apache.commons.dbcp.BasicDataSource.getConnection(BasicDataSource.java:1044)
at org.hibernate.engine.jdbc.connections.internal.DatasourceConnectionProviderImpl.getConnection(DatasourceConnectionProviderImpl.java:139)
at org.hibernate.engine.jdbc.internal.JdbcServicesImpl$ConnectionProviderJdbcConnectionAccess.obtainConnection(JdbcServicesImpl.java:279)
at org.hibernate.engine.jdbc.internal.JdbcServicesImpl.configure(JdbcServicesImpl.java:124)
at org.hibernate.boot.registry.internal.StandardServiceRegistryImpl.configureService(StandardServiceRegistryImpl.java:111)
Please find below database base configuration
Application 1
application-Context.xml
<bean class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close" id="dataSource">
<property name="driverClassName" value="${database.driverClassName}"/>
<property name="url" value="${database.url}"/>
<property name="username" value="${database.username}"/>
<property name="password" value="${database.password}"/>
<property name="testOnBorrow" value="true"/>
<property name="testOnReturn" value="true"/>
<property name="testWhileIdle" value="true"/>
<property name="timeBetweenEvictionRunsMillis" value="1800000"/>
<property name="numTestsPerEvictionRun" value="3"/>
<property name="minEvictableIdleTimeMillis" value="1800000"/>
<property name="validationQuery" value="SELECT version();"/>
</bean>
<bean class="org.springframework.orm.jpa.JpaTransactionManager" id="transactionManager">
<property name="entityManagerFactory" ref="entityManagerFactory"/>
</bean>
<tx:annotation-driven mode="aspectj" transaction-manager="transactionManager"/>
<bean class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean" id="entityManagerFactory">
<property name="persistenceUnitName" value="persistenceUnit"/>
<property name="dataSource" ref="dataSource"/>
</bean>
Application 1. Database.properties
database.driverClassName=org.postgresql.Driver
database.url=jdbc\:postgresql\://localhost\:5432/db
database.username=username
database.password=password
Application 2
application-Context.xml
<bean class="java.net.URI" id="dbUrl">
<constructor-arg value="postgres://username:password#localhost:5432/db"/>
</bean>
<bean class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close" id="dataSource">
<property name="driverClassName" value="org.postgresql.Driver"/>
<property name="url" value="#{ 'jdbc:postgresql://' + #dbUrl.getHost() + ':' + #dbUrl.getPort() + #dbUrl.getPath() }"/>
<property name="username" value="#{ #dbUrl.getUserInfo().split(':')[0] }"/>
<property name="password" value="#{ #dbUrl.getUserInfo().split(':')[1] }"/>
<property name="testOnBorrow" value="true"/>
<property name="testOnReturn" value="true"/>
<property name="testWhileIdle" value="true"/>
<property name="timeBetweenEvictionRunsMillis" value="1800000"/>
<property name="numTestsPerEvictionRun" value="3"/>
<property name="minEvictableIdleTimeMillis" value="1800000"/>
<property name="validationQuery" value="SELECT version();"/>
</bean>
<bean class="org.springframework.orm.jpa.JpaTransactionManager" id="transactionManager">
<property name="entityManagerFactory" ref="entityManagerFactory"/>
</bean>
<tx:annotation-driven mode="aspectj" transaction-manager="transactionManager"/>
<util:properties id="regex.properties" location="classpath:META-INF/spring/regex.properties"/>
<bean class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean" id="entityManagerFactory">
<property name="persistenceUnitName" value="persistenceUnit"/>
<property name="dataSource" ref="dataSource"/>
</bean>
Please advice how can I resolve my Problem..
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource" destroy-method="close">
<property name="driverClass" value="org.postgresql.Driver" />
<property name="jdbcUrl" value="jdbc:postgresql://localhost:5432/db" />
<property name="user" value="user" />
<property name="password" value="pass" />
<!-- pool sizing -->
<property name="initialPoolSize" value="3" />
<property name="minPoolSize" value="6" />
<property name="maxPoolSize" value="25" />
<property name="acquireIncrement" value="3" />
<property name="maxStatements" value="0" />
</bean>
I used this and it works
I have the following configuration in my Spring MVC project:
<bean id="datasource" class="org.apache.commons.dbcp.BasicDataSource">
<property name="url" value="jdbc:mysql://localhost:3306/tracDB"/>
<property name="driverClassName" value="com.mysql.jdbc.Driver"/>
<property name="username" value="root"/>
<property name="password" value=""/>
</bean>
<bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<property name="persistenceUnitName" value="spring-practice"/>
<property name="packagesToScan" value="com.paweljarosz.trac.data"/>
<property name="dataSource" ref="datasource"/>
<property name="jpaVendorAdapter">
<bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter">
<property name="showSql" value="true"/>
<property name="database" value="MYSQL"/>
</bean>
</property>
</bean>
<bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager">
<property name="entityManagerFactory" ref="entityManagerFactory"/>
</bean>
I would like Hibernate to automatically create and update data model based on entities. Does anyone know how to fix this configutation to achieve it?
I suppose you need something like this
<property name="jpaVendorAdapter">
<bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter">
<property name="database" value="MYSQL"/>
<property name="showSql" value="true"/>
<property name="generateDdl" value="true"/>
</bean>
</property>
Alternatively, most of these things can also be set in the JPA properties directly. Spring lets you do that through the jpaVendorProperties as well. See Hibernate Configuration Properties for reference.
For example:
<property name="jpaProperties">
<props>
<prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect</prop>
<prop key="hibernate.use_sql_comments">true</prop>
<prop key="hibernate.format_sql">true</prop>
<prop key="hibernate.generate_statistics">true</prop>
<prop key="hibernate.jdbc.fetch_size">100</prop>
<!-- This one below is what you're looking for-->
<prop key="hibernate.hbm2ddl.auto">create</prop>
</props>
</property>
I am using the below statement in my applicationContext.xml file (Spring 3).
<bean name="loggingAutoProxy"
class="org.springframework.aop.framework.autoproxy.BeanNameAutoProxyCreator">
In this applicationContext file, when i try to give a different name for the bean property name and reference, it is returning null object. But, if i give a same value for the name and reference, it is working properly/ returning the bean reference correctly. Is this problem because of the org.springframework.aop.framework.autoproxy.BeanNameAutoProxyCreator? If yes, how to resolve this issue?
This doesn't work (returns the bean reference as null in my java code):
<bean id="cacheDelegate" class="com.srsa.wiradmin.delegate.CacheDelegate" >
<property name="statusDBDAO"><ref bean="BMOStatusDBDAO" /></property>
</bean>
<bean id="BMOStatusDBDAO" class="com.srsa.wiradmin.dao.StatusDBDAO">
<property name="dataSource">
<ref bean="BMOAdminDataSource" />
</property>
</bean>
<bean id="BMOAdminDataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"
destroy-method="close" lazy-init="default" autowire="default" dependency-check="default">
<property name="driverClass" value="${jdbc.driver}" ></property>
<property name="jdbcUrl" value="${admin.jdbc.url}" ></property>
<property name="user" value="${admin.jdbc.user}" ></property>
<property name="password" value="${admin.jdbc.password}" ></property>
<property name="initialPoolSize" value="3" ></property>
<property name="minPoolSize" value="3" ></property>
<property name="maxPoolSize" value="25" ></property>
<property name="acquireIncrement" value="1" ></property>
<property name="acquireRetryDelay" value="1000" ></property>
<property name="debugUnreturnedConnectionStackTraces" value="true" ></property>
<property name="maxIdleTime" value="300" ></property>
<property name="unreturnedConnectionTimeout" value="300000" ></property>
<property name="preferredTestQuery" value="SELECT COUNT(*) FROM LOCALE_CODE" ></property>
<property name="checkoutTimeout" value="300000" ></property>
<property name="idleConnectionTestPeriod" value="600000" ></property>
</bean>
This works (returns the object properly):
<bean id="cacheDelegate" class="com.srsa.wiradmin.delegate.CacheDelegate" >
<property name="statusDBDAO"><ref bean="statusDBDAO" /></property>
</bean>
<bean id="statusDBDAO" class="com.srsa.wiradmin.dao.StatusDBDAO">
<property name="dataSource">
<ref bean="BMOAdminDataSource" />
</property>
</bean>
<bean id="BMOAdminDataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"
destroy-method="close" lazy-init="default" autowire="default" dependency-check="default">
<property name="driverClass" value="${jdbc.driver}" ></property>
<property name="jdbcUrl" value="${admin.jdbc.url}" ></property>
<property name="user" value="${admin.jdbc.user}" ></property>
<property name="password" value="${admin.jdbc.password}" ></property>
<property name="initialPoolSize" value="3" ></property>
<property name="minPoolSize" value="3" ></property>
<property name="maxPoolSize" value="25" ></property>
<property name="acquireIncrement" value="1" ></property>
<property name="acquireRetryDelay" value="1000" ></property>
<property name="debugUnreturnedConnectionStackTraces" value="true" ></property>
<property name="maxIdleTime" value="300" ></property>
<property name="unreturnedConnectionTimeout" value="300000" ></property>
<property name="preferredTestQuery" value="SELECT COUNT(*) FROM LOCALE_CODE" ></property>
<property name="checkoutTimeout" value="300000" ></property>
<property name="idleConnectionTestPeriod" value="600000" ></property>
</bean>
bye....
Your cacheDelegate bean is looking up a bean referenced to the ID statusDBDAO, but the ID on the DAO is actually BMOStatusDBDAO.
I want to define a routingdatasource for two different databases: mysql and oracle
I've defined the following config.xml
<bean id="dataSourceTarget" class="com.test.common.RoutingDataSource">
<property name="targetDataSources">
<map key-type="com.test.common.DataSourceType">
<entry key="MY_SQL" value-ref="mySqlDataSource"/>
<entry key="ORACLE" value-ref="oracleDataSource"/>
</map>
</property>
<property name="defaultTargetDataSource" ref="mySqlDataSource"/>
</bean>
<bean id="mySqlDataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"
destroy-method="close">
<property name="driverClass" value="${jdbc.driver.classname}" />
<property name="jdbcUrl" value="${mysql.url}" />
<property name="user" value="${mysql.username}" />
<property name="password" value="${mysql.password}" />
</bean>
<bean id="oracleDataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"
destroy-method="close">
<property name="driverClass" value="oracle.jdbc.driver.OracleDriver" />
<property name="jdbcUrl" value="${oracle.url}" />
<property name="user" value="${oracle.user}" />
<property name="password" value="${oracle.passw}" />
</bean>
and now I can define session factory and transaction manager
<bean id="sessionFactory" class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean">
<property name="hibernateProperties">
<props>
<prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect</prop>
<prop key="hibernate.format_sql">true</prop>
<prop key="hibernate.use_sql_comments">true</prop>
</props>
</property>
</bean>
But this is doesn't work. I'm getting the
Caused by: java.lang.UnsupportedOperationException: The user must supply a JDBC connection
And in addition I must define the dialect for session.
But how can I define it depending on the datasourse it is working on?