Hi Noble, In my case, Institutions can be entered in two different ways.
1. Institutions information is directly present in the INSTITUTION table. (Note - Such institutions ARE NOT present in INSTITUTION_SOURCE_MAP table.). In this case, I have INSTITUTION as the parent entity. And INSTITUTION_TYPE as child entry in order to retrieve the institution_type. 2. Institutions are mapped to INSTITUTION table through INSTITUTION_SOURCE_MAP table. (In this case, user can search institutions based on INSTITUTION_SOURCE_MAP fields.) So here INSTITUTION_SOURCE_MAP table is parent entity. And INSTITUTION is the child entity. How else can I specify the relationship? Thanks, Manu Noble Paul നോബിള് नोब्ळ् wrote: > > why do you have multiple root entities ? > > > > On Wed, Jan 7, 2009 at 7:48 PM, Manupriya <manupriya.si...@gmail.com> > wrote: >> >> Hi, >> >> I am using the following schema - >> >> http://www.nabble.com/file/p21332196/table_stuct.gif >> >> 1. INSTITUTION table is the main table that has information about all the >> institutions. >> 2. INSTITUTION_TYPE table has 'institute_type' and its 'description' for >> each 'institute_type_id' in the INSTITUTION table. >> 3. INSTITUTION_SOURCE_MAP table is a mapping table. This has >> institution_id >> corresponding to source_id from external system. >> >> NOTE - INSTITUTION table is union of institutions created internally AND >> institutions corresponding to source_ids from external systems. >> >> Requirement - >> 1. Search Institutions by 'institution_name' in the INSTITUTION table. >> 2. Display institution_type for institution_type_id. >> 3. user should be able to search for institution by 'source_id' and >> 'source_entity_name'. >> >> My db-data-config.xml is following - >> >> =============================================================================== >> <dataConfig> >> <dataSource driver="net.sourceforge.jtds.jdbc.Driver" >> url="jdbc:jtds:sqlserver://localhost:1433/dummy-master" >> user="dummy-master" >> password="dummy-master" /> >> <document name="institution"> >> <entity name="INSTITUTION" pk="institution_id" query="select * >> from >> INSTITUTION" >> deltaQuery="select institution_id from INSTITUTION where >> last_update_date > '${dataimporter.last_index_time}'"> >> <field column="institution_id" name="id" /> >> <field column="institution_name" name="institutionName" /> >> <field column="description" name="description" /> >> <field column="institution_type_id" name="institutionTypeId" /> >> >> <entity name="INSTITUTION_TYPE" pk="institution_type_id" >> query="select institution_type from INSTITUTION_TYPE where >> institution_type_id='${INSTITUTION.institution_type_id}'" >> parentDeltaQuery="select institution_type_id from INSTITUTION where >> institution_type_id=${INSTITUTION_TYPE.institution_type_id}"> >> >> <field name="institutionType" column="institution_type" /> >> </entity> >> </entity> >> >> <entity name="INSTITUTION_SOURCE_MAP" pk="institution_id, source_id, >> source_entity_name, source_key, source_key_field" query="select * from >> INSTITUTION_SOURCE_MAP"> >> <field column="source_id" name="sourceId" /> >> <field column="source_entity_name" name="sourceEntityName" /> >> >> <entity name="INSTITUTION" pk="institution_id" >> query="select * from INSTITUTION where institution_id = >> '${INSTITUTION_SOURCE_MAP.institution_id}'"> >> <field column="institution_id" name="id" /> >> <field column="institution_name" name="institutionName" /> >> <field column="description" name="description" /> >> <field column="institution_type_id" name="institutionTypeId" /> >> >> <entity name="INSTITUTION_TYPE" pk="institution_type_id" query="select >> institution_type from INSTITUTION_TYPE where >> institution_type_id='${INSTITUTION.institution_type_id}'" >> parentDeltaQuery="select institution_type_id from INSTITUTION where >> institution_type_id=${INSTITUTION_TYPE.institution_type_id}"> >> >> <field name="institutionType" column="institution_type" /> >> </entity> >> </entity> >> >> </entity> >> </document> >> </dataConfig> >> =============================================================================== >> >> My configuration file is working perfectly fine. I have specified two >> <entity> inside on <document>. And both the <entity> has further nested >> <entity> tags. >> >> Can anyone suggest me if there is any other/better way to configure the >> relationship? :confused: >> >> I have referred http://wiki.apache.org/solr/DataImportHandler and >> http://download.boulder.ibm.com/ibmdl/pub/software/dw/java/j-solr-update-pdf.pdf >> >> Is there any resource that has detailed information about tags used in >> db-data-config.xml? >> >> Thanks, >> Manu >> >> -- >> View this message in context: >> http://www.nabble.com/Is-there-any-better-way-to-configure-db-data-config.xml-tp21332196p21332196.html >> Sent from the Solr - User mailing list archive at Nabble.com. >> >> > > > > -- > --Noble Paul > > -- View this message in context: http://www.nabble.com/Is-there-any-better-way-to-configure-db-data-config.xml-tp21332196p21346513.html Sent from the Solr - User mailing list archive at Nabble.com.
