com.frank.search.solr.core.query.result.TermsResultPage.java Source code

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Here is the source code for com.frank.search.solr.core.query.result.TermsResultPage.java

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/*
 * Copyright 2012 - 2013 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.frank.search.solr.core.query.result;

import com.frank.search.solr.core.query.SimpleField;
import com.frank.search.solr.core.query.Field;
import org.springframework.util.Assert;

import java.util.*;

/**
 * @author Christoph Strobl
 * 
 */
public class TermsResultPage implements TermsPage {

    private Map<StringPageKey, List<TermsFieldEntry>> termsMap = new LinkedHashMap<StringPageKey, List<TermsFieldEntry>>(
            1);

    public final void addTermsResult(List<TermsFieldEntry> entries, Field field) {
        Assert.notNull(field, "Cannot add terms for 'null' field.");
        this.termsMap.put(new StringPageKey(field.getName()), entries);
    }

    public final void addTermsResult(List<TermsFieldEntry> entries, String fieldname) {
        Assert.notNull(fieldname, "Cannot add terms for 'null' field.");
        this.termsMap.put(new StringPageKey(fieldname), entries);
    }

    public void addAllTerms(Map<String, List<TermsFieldEntry>> pageMap) {
        for (Map.Entry<String, List<TermsFieldEntry>> entry : pageMap.entrySet()) {
            addTermsResult(entry.getValue(), entry.getKey());
        }
    }

    @Override
    public Iterable<TermsFieldEntry> getTermsForField(String fieldname) {
        Iterable<TermsFieldEntry> terms = this.termsMap.get(new StringPageKey(fieldname));
        return terms != null ? terms : Collections.<TermsFieldEntry>emptyList();
    }

    public Iterable<TermsFieldEntry> getTerms(Field field) {
        Assert.notNull(field, "Field cannot be null.");
        return getTermsForField(field.getName());
    }

    public Collection<Field> getTermsFields() {
        if (this.termsMap.isEmpty()) {
            return Collections.emptyList();
        }

        List<Field> fields = new ArrayList<Field>(this.termsMap.size());
        for (StringPageKey pageKey : this.termsMap.keySet()) {
            fields.add(new SimpleField(pageKey.getKey()));
        }
        return fields;
    }

    @Override
    public Iterator<TermsFieldEntry> iterator() {
        return getContent().iterator();
    }

    @Override
    public List<TermsFieldEntry> getContent() {
        List<TermsFieldEntry> values = new ArrayList<TermsFieldEntry>();
        for (List<TermsFieldEntry> entries : termsMap.values()) {
            values.addAll(entries);
        }
        return values;
    }

    @Override
    public boolean hasContent() {
        return !termsMap.isEmpty();
    }

}