Mohammad Faisal Mohammad Faisal - 4 months ago 22
MySQL Question

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 |
+---------------+---------------+------+-----+-------------------+-----------------------------+

Answer

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>
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