Hey I have a small problem doing a query: the query line is: Query query = session.createQuery("from Recipe r where r.name='" + searchString + "' and r.ownerid=" + userId );
the .hbm.xml file is:
<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<!-- Generated Aug 26, 2011 10:56:44 AM by Hibernate Tools 3.4.0.CR1 -->
<hibernate-mapping>
<class catalog="icdb" name="com.icdb.data.Recipe" table="recipes">
<id name="recipeid" type="int">
<column name="recipeid"/>
<generator class="identity"/>
</id>
<many-to-one class="com.icdb.data.User" fetch="select" name="users">
<column name="ownerid" not-null="true"/>
</many-to-one>
<property generated="never" lazy="false" name="releasedate" type="timestamp">
<column length="19" name="releasedate" not-null="true"/>
</property>
<property generated="never" lazy="false" name="preparationtime" type="int">
<column name="preparationtime" not-null="true"/>
</property>
<property generated="never" lazy="false" name="name" type="string">
<column length="50" name="name" not-null="true"/>
</property>
<property generated="never" lazy="false" name="description" type="string">
<column length="200" name="description"/>
</property>
<property generated="never" lazy="false" name="lastupdated" type="timestamp">
<column length="19" name="lastupdated" not-null="true"/>
</property>
<property generated="never" lazy="false" name="servecount" type="java.lang.Integer">
<column name="servecount"/>
</property>
<property generated="never" lazy="false" name="complete" type="boolean">
<column name="complete" not-null="true"/>
</property>
<set fetch="select" inverse="true" lazy="true" name="recipepictureses"
sort="unsorted" table="recipepictures">
<key>
<column name="recipeid" not-null="true"/>
</key>
<one-to-many class="com.icdb.data.RecipePicture"/>
</set>
<set fetch="select" inverse="true" lazy="true"
name="recipeingredientses" sort="unsorted" table="recipeingredients">
<key>
<column name="recipeid" not-null="true"/>
</key>
<one-to-many class="com.icdb.data.RecipeIngredient"/>
</set>
<set fetch="select" inverse="true" lazy="true" name="recipetipses"
sort="unsorted" table="recipetips">
<key>
<column name="recipeid" not-null="true"/>
</key>
<one-to-many class="com.icdb.data.RecipeTip"/>
</set>
<set fetch="select" inverse="true" lazy="true" name="recipereviewses"
sort="unsorted" table="recipereviews">
<key>
<column name="recipeid" not-null="true"/>
</key>
<one-to-many class="com.icdb.data.RecipeReview"/>
</set>
<set fetch="select" inverse="true" lazy="true"
name="recipeinstructionses" sort="unsorted" table="recipeinstructions">
<key>
<column name="recipeid" not-null="true"/>
</key>
<one-to-many class="com.icdb.data.RecipeInstruction"/>
</set>
<property name="recipedifficul开发者_运维知识库ty" type="int">
<column name="recipedifficulty" not-null="true" sql-type="INTEGER"/>
</property>
</class>
</hibernate-mapping>
I get an exception - saying "Could not resolve property ownerid of Recipe ..."
Why? What have I declared wrong? Or do I do the query in a wrong way?
Yoav
you either need to:
1) add ownerid property to the mapping
<property name="ownerid" type="int">
<column name="ownerid" not-null="true"/>
</property>
OR
2) use r.users.id in your query (assuming User's primary key property is 'id')
Query query = session.createQuery("from Recipe r where r.name='" + searchString + "' and r.users.id=" + userId );
side-note 1: it's better using positional or named parameters in a query instead of string concatenation - http://www.mkyong.com/hibernate/hibernate-parameter-binding-examples/
side-note 2: as long as 'users' association mapping is many-to-one then the more proper name for it is 'user' - there is only one user associated with each recipe
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