javamysqlhibernatenamed-queryhibernate3

PropertyNotFoundException: Could not find setter for column_name on class


I am facing the with hibernates named query and transform to bean.

Here is the code:

query = session.getNamedQuery( "LAST_ADDED_DOC" );
query.setString( "module", inNpUploads.getModuleName() );
query.setString( "mapping", inNpUploads.getMappingId() );
query.setResultTransformer( Transformers.aliasToBean( NpUploads.class ) );
dmsDb = query.list();

but the exception is thrown for query.list():

org.hibernate.PropertyNotFoundException: Could not find setter for doc_id on class com.np.upload.pojo.NpUploads
    at org.hibernate.property.ChainedPropertyAccessor.getSetter(ChainedPropertyAccessor.java:44)
    at org.hibernate.transform.AliasToBeanResultTransformer.transformTuple(AliasToBeanResultTransformer.java:57)
    at org.hibernate.hql.HolderInstantiator.instantiate(HolderInstantiator.java:69)
    at org.hibernate.loader.custom.CustomLoader.getResultList(CustomLoader.java:330)
    at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2104)
    at org.hibernate.loader.Loader.list(Loader.java:2099)
    at org.hibernate.loader.custom.CustomLoader.list(CustomLoader.java:289)
    at org.hibernate.impl.SessionImpl.listCustomQuery(SessionImpl.java:1695)
    at org.hibernate.impl.AbstractSessionImpl.list(AbstractSessionImpl.java:142)
    at org.hibernate.impl.SQLQueryImpl.list(SQLQueryImpl.java:152)
    at com.np.upload.manager.FileUploadManager.listUploadedFiles(FileUploadManager.java:116)
    at com.np.upload.spring.controller.FileUploadController.prepareUploadPage(FileUploadController.java:222)
    at com.np.upload.spring.controller.FileUploadController.uploadPage(FileUploadController.java:84)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)

The hbm:

<?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 Sep 30, 2015 10:32:57 PM by Hibernate Tools 3.4.0.CR1 -->
<hibernate-mapping>
    <class name="com.np.upload.pojo.NpUploads" table="np_document_uploads" dynamic-update="true">
        <id name="docId" type="java.lang.Integer">
            <column name="doc_id" />
            <generator class="identity" />
        </id>
        <version name="version" type="java.lang.Integer">
            <column name="version" />
        </version>
        <property name="moduleName" type="string">
            <column name="module_name" not-null="true" />
        </property>
        <property name="mappingId" type="string">
            <column name="mapping_id" not-null="true" />
        </property>
        <property name="docType" type="string">
            <column name="doc_type" not-null="true" />
        </property>
        <property name="docName" type="string">
            <column name="doc_name" not-null="true" />
        </property>
        <property name="docPath" type="string">
            <column name="doc_path" length="1024" not-null="true" />
        </property>
        <property name="createdTime" type="timestamp" insert="false" update="false">
            <column name="created_time" length="19" />
        </property>
        <property name="modifiedTime" type="timestamp" insert="false" update="false">
            <column name="modified_time" length="19" />
        </property>
    </class>
    <sql-query name="LAST_ADDED_DOC">
       <![CDATA[SELECT d.* FROM np_document_uploads d
                JOIN(
                    SELECT module_name, mapping_id, doc_type, max(version) AS version
                    FROM np_document_uploads u
                    WHERE u.module_name=:module and u.mapping_id=:mapping
                    GROUP BY module_name, mapping_id, doc_type
                )tt USING( module_name, mapping_id, doc_type, version )
                WHERE d.module_name=:module and d.mapping_id=:mapping]]>
    </sql-query>
</hibernate-mapping>

and the pojo:

public class NpUploads
    implements java.io.Serializable
{
    private static final long serialVersionUID = -5063169354511880324L;
    private Integer           docId;
    private Integer           version;
    private String            moduleName;
    private String            mappingId;
    private String            docType;
    private String            docName;
    private String            docPath;
    private Date              createdTime;
    private Date              modifiedTime;

    // getter and setters for all properties are there.
}

Database schema:

+---------------+---------------+------+-----+-------------------+-----------------------------+
| Field         | Type          | Null | Key | Default           | Extra                       |
+---------------+---------------+------+-----+-------------------+-----------------------------+
| doc_id        | int(11)       | NO   | PRI | NULL              | auto_increment              |
| module_name   | varchar(255)  | NO   |     | NULL              |                             |
| mapping_id    | varchar(255)  | NO   |     | NULL              |                             |
| doc_type      | varchar(255)  | NO   |     | NULL              |                             |
| doc_name      | varchar(255)  | NO   |     | NULL              |                             |
| doc_path      | varchar(1024) | NO   |     | NULL              |                             |
| version       | int(6)        | YES  |     | NULL              |                             |
| created_time  | timestamp     | YES  |     | CURRENT_TIMESTAMP |                             |
| modified_time | timestamp     | YES  |     | CURRENT_TIMESTAMP | on update CURRENT_TIMESTAMP |
+---------------+---------------+------+-----+-------------------+-----------------------------+

Solution

  • As you are using Transformers.aliasToBean which uses the alias names to find the setter methods of your resultClass (NpUploads)

    In order to make Transformers.aliasToBean work properly you need to use proper alias names in your query. If the property name in your NpUploads class is docId, you should use select doc_id as docId.

    Remove d.* in you query and use individual column with proper aliases

    Modify below and check link for reference:

    <?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 Sep 30, 2015 10:32:57 PM by Hibernate Tools 3.4.0.CR1 -->
    <hibernate-mapping>
        <class name="com.np.upload.pojo.NpUploads" table="np_document_uploads" dynamic-update="true">
            <id name="docId" type="java.lang.Integer">
                <column name="doc_id" />
                <generator class="identity" />
            </id>
            <version name="version" type="java.lang.Integer">
                <column name="version" />
            </version>
            <property name="moduleName" type="string">
                <column name="module_name" not-null="true" />
            </property>
            <property name="mappingId" type="string">
                <column name="mapping_id" not-null="true" />
            </property>
            <property name="docType" type="string">
                <column name="doc_type" not-null="true" />
            </property>
            <property name="docName" type="string">
                <column name="doc_name" not-null="true" />
            </property>
            <property name="docPath" type="string">
                <column name="doc_path" length="1024" not-null="true" />
            </property>
            <property name="createdTime" type="timestamp" insert="false" update="false">
                <column name="created_time" length="19" />
            </property>
            <property name="modifiedTime" type="timestamp" insert="false" update="false">
                <column name="modified_time" length="19" />
            </property>
            <loader query-ref="LAST_ADDED_DOC"/>
        </class>
        <sql-query name="LAST_ADDED_DOC">
            <return alias="up" class="NpUploads"/>       
            <![CDATA[SELECT d.doc_id as {up.docId},d.module_name as {up.moduleName},d.mapping_id as {up.mappingId},d.doc_type as {up.docType},d.doc_name as {up.docName},d.version as {up.version},d.doc_path as {up.docPath},d.created_time as {up.createdTime},d.modified_time as {up.modifiedTime} FROM np_document_uploads d
                JOIN(
                    SELECT module_name, mapping_id, doc_type, max(version) AS version
                    FROM np_document_uploads u
                    WHERE u.module_name=:module and u.mapping_id=:mapping
                    GROUP BY module_name, mapping_id, doc_type
                )tt USING( module_name, mapping_id, doc_type, version )
                WHERE d.module_name=:module and d.mapping_id=:mapping]]>
        </sql-query>
    </hibernate-mapping>