Java/Spring/JDBC: changing database schema property at run-time -


i'm trying come solution following problem:

i have number of spring beans various daos in application configured like:

<bean id="productdao" class="com.myproject.productjdbcdao">     <property name="datasource" ref="datasource" />     <property name="getallproductssql" value="select * ${myschema}product_table" /> </bean>  <bean id="customerdao" class="com.myproject.customerjdbcdao">     <property name="datasource" ref="datasource" /> </bean>

where myschema set in our properties file like:

myschema=testdbschema.

i have spring bean post processor configured like:

<bean class="com.project.schemaawarebeanpostprocessor">     <property name="myschema" value="${myschema}" />     <property name="differentschema" value="${differentschema}" /> </bean>

where postprocessbeforeinitialization() method implementation looks like:

@override public object postprocessbeforeinitialization(object bean, string beanname) throws beansexception {     if(bean instanceof schemaawareinterface) {         schemaawareinterface dao = (schemaawareinterface) bean;         dao.setschemas(this.myschema, this.differentschema);     }     return bean;     }

so dao implements schemaawareinterface can , store schema values when it's bean created spring. example, customerdao implementation might this:

public class customerjdbcdao extends jdbcdaosupport implements schemaawareinterface {     private string myschema;      @override     public void setschemas(string myschema, string differentschema) {          this.myschema = myschema;     }      public list<customer> getcustomers() {         //code uses this.myschema build dynamic sql     } }

now, want able arbitrarily change value of myschema while application running dao or class created original myschema value updated use new value. how accomplish this?


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