| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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 org.apache.solr.schema; |
| |
| import java.io.IOException; |
| import java.util.ArrayList; |
| import java.util.Collections; |
| import java.util.List; |
| import java.util.Map; |
| |
| import org.apache.lucene.document.SortedDocValuesField; |
| import org.apache.lucene.document.SortedSetDocValuesField; |
| import org.apache.lucene.index.IndexableField; |
| import org.apache.lucene.queries.function.ValueSource; |
| import org.apache.lucene.queries.function.valuesource.SortedSetFieldSource; |
| import org.apache.lucene.search.SortField; |
| import org.apache.lucene.search.SortedSetSelector; |
| import org.apache.lucene.util.BytesRef; |
| import org.apache.solr.common.SolrException; |
| import org.apache.solr.common.util.ByteArrayUtf8CharSequence; |
| import org.apache.solr.response.TextResponseWriter; |
| import org.apache.solr.search.QParser; |
| import org.apache.solr.uninverting.UninvertingReader.Type; |
| |
| public class StrField extends PrimitiveFieldType { |
| |
| @Override |
| protected void init(IndexSchema schema, Map<String,String> args) { |
| super.init(schema, args); |
| } |
| |
| @Override |
| public List<IndexableField> createFields(SchemaField field, Object value) { |
| IndexableField fval = createField(field, value); |
| |
| if (field.hasDocValues()) { |
| IndexableField docval; |
| final BytesRef bytes = getBytesRef(value); |
| if (field.multiValued()) { |
| docval = new SortedSetDocValuesField(field.getName(), bytes); |
| } else { |
| docval = new SortedDocValuesField(field.getName(), bytes); |
| } |
| |
| // Only create a list of we have 2 values... |
| if (fval != null) { |
| List<IndexableField> fields = new ArrayList<>(2); |
| fields.add(fval); |
| fields.add(docval); |
| return fields; |
| } |
| |
| fval = docval; |
| } |
| return Collections.singletonList(fval); |
| } |
| |
| public static BytesRef getBytesRef(Object value) { |
| if (value instanceof ByteArrayUtf8CharSequence) { |
| ByteArrayUtf8CharSequence utf8 = (ByteArrayUtf8CharSequence) value; |
| return new BytesRef(utf8.getBuf(), utf8.offset(), utf8.size()); |
| } else return new BytesRef(value.toString()); |
| } |
| |
| |
| @Override |
| public boolean isUtf8Field() { |
| return true; |
| } |
| |
| @Override |
| public SortField getSortField(SchemaField field,boolean reverse) { |
| return getStringSort(field,reverse); |
| } |
| |
| @Override |
| public Type getUninversionType(SchemaField sf) { |
| if (sf.multiValued()) { |
| return Type.SORTED_SET_BINARY; |
| } else { |
| return Type.SORTED; |
| } |
| } |
| |
| @Override |
| public void write(TextResponseWriter writer, String name, IndexableField f) throws IOException { |
| writer.writeStr(name, toExternal(f), true); |
| } |
| |
| @Override |
| public ValueSource getValueSource(SchemaField field, QParser parser) { |
| field.checkFieldCacheSource(); |
| return new StrFieldSource(field.getName()); |
| } |
| |
| @Override |
| public Object toObject(SchemaField sf, BytesRef term) { |
| return term.utf8ToString(); |
| } |
| |
| @Override |
| public Object marshalSortValue(Object value) { |
| return marshalStringSortValue(value); |
| } |
| |
| @Override |
| public Object unmarshalSortValue(Object value) { |
| return unmarshalStringSortValue(value); |
| } |
| |
| @Override |
| public ValueSource getSingleValueSource(MultiValueSelector choice, SchemaField field, QParser parser) { |
| // trivial base case |
| if (!field.multiValued()) { |
| // single value matches any selector |
| return getValueSource(field, parser); |
| } |
| |
| // See LUCENE-6709 |
| if (! field.hasDocValues()) { |
| throw new SolrException(SolrException.ErrorCode.BAD_REQUEST, |
| "docValues='true' is required to select '" + choice.toString() + |
| "' value from multivalued field ("+ field.getName() +") at query time"); |
| } |
| SortedSetSelector.Type selectorType = choice.getSortedSetSelectorType(); |
| if (null == selectorType) { |
| throw new SolrException(SolrException.ErrorCode.BAD_REQUEST, |
| choice.toString() + " is not a supported option for picking a single value" |
| + " from the multivalued field: " + field.getName() + |
| " (type: " + this.getTypeName() + ")"); |
| } |
| |
| return new SortedSetFieldSource(field.getName(), selectorType); |
| } |
| } |
| |
| |