Search by an inputstream property - full-text-search

Question

I have a question about making a xpath expression for filtering resources by a property of type inputStream called data.
How can I do a text search, for example this is working:
String xpath1 = "<my app path>//element(*, nt:resource) [jcr:contains(#jcr:mimeType,'*plain*')]";
String xpath2 = "<my app path>//element(*, nt:resource) [jcr:contains(#jcr:encoding,'*utf*')]";
But this is not working.
String xpath3 = "<my app path>//element(*, nt:resource) [jcr:contains(#jcr:data,'*plain*')]";
The really fact is that we use some custom nodes, let's explain the properties definitions:
In Java Terms...
public class Resource extends BaseNode {
/** Encoding media type. It cannot be null or empty. */
#Field(jcrName = "jcr:encoding", jcrDefaultValue = "")
private String encoding;
/** Resource's MIME type. It cannot be null or empty. */
#Field(jcrName="jcr:mimeType", jcrDefaultValue = "")
private String mimeType;
/** Resource's size (bytes). */
#Field(jcrName="skl:size")
private long size;
/** Resource's content data as stream. It cannot be null. */
#Field(jcrName="jcr:data")
private InputStream data;
...
}
#Node(jcrType = "baseNode", isAbstract = true)
public abstract class BaseNode {
#Field(jcrName = "name", id = true)
protected String name;
#Field(jcrName = "creationDate")
protected Date creationDate;
...
}
And in JackRabbit Terms...
<!-- Base node type definition -->
<nodeType name="docs:baseNode"
isMixin="false"
hasOrderableChildNodes="false" >
<supertypes>
<supertype>nt:hierarchyNode</supertype>
</supertypes>
<propertyDefinition name="docs:name"
requiredType="String"
autoCreated="false"
mandatory="true"
onParentVersion="COPY"
protected="false"
multiple="false" />
<propertyDefinition name="docs:searchPath"
requiredType="String"
autoCreated="false"
mandatory="false"
onParentVersion="COPY"
protected="false"
multiple="false" />
<propertyDefinition name="docs:creationDate"
requiredType="Date"
autoCreated="false"
mandatory="true"
onParentVersion="COPY"
protected="false"
multiple="false" />
<propertyDefinition name="docs:lastModified"
requiredType="Date"
autoCreated="false"
mandatory="true"
onParentVersion="COPY"
protected="false"
multiple="false" />
<childNodeDefinition name="*"
defaultPrimaryType="docs:baseNode"
autoCreated="false"
mandatory="false"
onParentVersion="COPY"
protected="false"
sameNameSiblings="false">
<requiredPrimaryTypes>
<requiredPrimaryType>docs:baseNode</requiredPrimaryType>
</requiredPrimaryTypes>
</childNodeDefinition>
</nodeType>
<!-- Resource node type definition -->
<nodeType name="skl:resource"
isMixin="false"
hasOrderableChildNodes="false" >
<supertypes>
<supertype>docs:baseNode</supertype>
<supertype>nt:resource</supertype>
</supertypes>
<propertyDefinition name="skl:size"
requiredType="Long"
autoCreated="false"
mandatory="true"
onParentVersion="COPY"
protected="false"
multiple="false" />
<propertyDefinition name="skl:externalUri"
requiredType="String"
autoCreated="false"
mandatory="false"
onParentVersion="COPY"
protected="false"
multiple="false" />
</nodeType>
The point is, how do I do this query in order to filter by the jcr:data property.

Answer 1

I think you have to turn on text extraction so that the searchable text from your "jcr:data" property will be indexed. See this email thread on the Jackrabbit discussion list.
BTW, the JCR CND format is a much more compact way of describing your node types.