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• 3.1.0-1
• source code
• PatriciaPrefixMapStoreAccessor.java

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org.aksw.sparqlify.database.PatriciaPrefixMapStoreAccessor Maven / Gradle / Ivy

package org.aksw.sparqlify.database;

//public class PatriciaPrefixMapStoreAccessor
//    implements MapStoreAccessor
//{
//    public static Set> supportedConstraintClasses = new HashSet>();
//
//    static
//    {
//        supportedConstraintClasses.add(EqualsConstraint.class);
//        supportedConstraintClasses.add(StartsWithConstraint.class);
//        supportedConstraintClasses.add(IsPrefixOfConstraint.class);
//    }
//
//    public Set> getSupportedConstraintClasses() {
//        return supportedConstraintClasses;
//    }
//
//
//    private int indexColumn;
//    private Transformer> prefixExtractor;
//
//    public PatriciaPrefixMapStoreAccessor(int[] indexColumns, Transformer> prefixExtractor) {
//        if(indexColumns.length != 1) {
//            throw new RuntimeException("Prefix index can only operate on single columns");
//        }
//
//        this.indexColumn = indexColumns[0];
//        this.prefixExtractor = prefixExtractor;
//    }
//
//    /**
//     * We assume that
//     * . only classes that are in supportedConstraintClasses are passed to this method.
//     * . only constraints for which the index has the right columns are passed
//     *
//     * This method should only be used by the engine
//     *
//     * @param constraints
//     * @return
//     */
//    /*
//    @Override
//    public Collection