Examples with FilterSpec org.apache.jena.query.text.assembler.GenericFilterAssembler.FilterSpec used on opensource projects

Example 1 with FilterSpec

use of org.apache.jena.query.text.assembler.GenericFilterAssembler.FilterSpec in project jena by apache.

the class ConfigurableAnalyzer method getTokenFilter.

private TokenFilter getTokenFilter(String filterName, TokenStream source) {
    FilterSpec spec = filterSpecs.get(filterName);
    if (spec == null) {
        throw new TextIndexException("Unknown filter : " + filterName);
    }
    Class<?> clazz = spec.clazz;
    Class<?>[] paramClasses = spec.paramClasses;
    Object[] paramValues = spec.paramValues;
    // the source should always be the first parameter
    paramValues[0] = source;
    return newFilter(clazz, paramClasses, paramValues);
}

Example 2 with FilterSpec

use of org.apache.jena.query.text.assembler.GenericFilterAssembler.FilterSpec in project jena by apache.

the class DefineFiltersAssembler method open.

/*
    <#indexLucene> a text:TextIndexLucene ;
        text:directory <file:Lucene> ;
        text:entityMap <#entMap> ;
        text:defineAnalyzers (
            [text:addLang "sa-x-iast" ;
             text:analyzer [ . . . ]]
            [text:defineAnalyzer <#foo> ;
             text:analyzer [ . . . ]]
            [text:defineFilter <#bar> ;
             text:filter [ . . . ]]
            [text:defineTokenizer <#baz> ;
             text:tokenizer [ . . . ]]
        )
    */
public static boolean open(Assembler a, Resource list) {
    Resource current = list;
    while (current != null && !current.equals(RDF.nil)) {
        Statement firstStmt = current.getProperty(RDF.first);
        if (firstStmt == null) {
            throw new TextIndexException("parameter list not well formed: " + current);
        }
        RDFNode first = firstStmt.getObject();
        if (!first.isResource()) {
            throw new TextIndexException("parameter specification must be an anon resource : " + first);
        }
        // process the current list element to add an analyzer
        Resource adding = (Resource) first;
        if (adding.hasProperty(TextVocab.pFilter)) {
            Statement filterStmt = adding.getProperty(TextVocab.pFilter);
            RDFNode filterNode = filterStmt.getObject();
            if (!filterNode.isResource()) {
                throw new TextIndexException("addFilters text:filter must be a filter spec resource: " + filterNode);
            }
            // calls GenericFilterAssembler
            FilterSpec filterSpec = (FilterSpec) a.open((Resource) filterNode);
            if (adding.hasProperty(TextVocab.pDefFilter)) {
                Statement defStmt = adding.getProperty(TextVocab.pDefFilter);
                Resource id = defStmt.getResource();
                if (id.getURI() != null) {
                    ConfigurableAnalyzer.defineFilter(id.getURI(), filterSpec);
                } else {
                    throw new TextIndexException("text:defineFilters text:defineAnalyzer property must be a non-blank resource: " + adding);
                }
            } else {
                Log.warn("DefineFiltersAssembler", "Filter specified but no text:defineFilter so filter is not accessible!");
            }
        }
        Statement restStmt = current.getProperty(RDF.rest);
        if (restStmt == null) {
            throw new TextIndexException("parameter list not terminated by rdf:nil");
        }
        RDFNode rest = restStmt.getObject();
        if (!rest.isResource()) {
            throw new TextIndexException("parameter list node is not a resource : " + rest);
        }
        current = (Resource) rest;
    }
    return true;
}