| /* |
| * 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.legacy; |
| |
| import org.apache.lucene.analysis.Analyzer; |
| import org.apache.lucene.analysis.TokenStream; |
| import org.apache.lucene.document.Field; |
| import org.apache.lucene.index.IndexOptions; |
| |
| /** |
| * Field extension with support for legacy numerics |
| * @deprecated Please switch to {@link org.apache.lucene.index.PointValues} instead |
| */ |
| @Deprecated |
| public class LegacyField extends Field { |
| |
| /** |
| * Expert: creates a field with no initial value. |
| * Intended only for custom LegacyField subclasses. |
| * @param name field name |
| * @param type field type |
| * @throws IllegalArgumentException if either the name or type |
| * is null. |
| */ |
| public LegacyField(String name, LegacyFieldType type) { |
| super(name, type); |
| } |
| |
| @Override |
| public TokenStream tokenStream(Analyzer analyzer, TokenStream reuse) { |
| if (fieldType().indexOptions() == IndexOptions.NONE) { |
| // Not indexed |
| return null; |
| } |
| final LegacyFieldType fieldType = (LegacyFieldType) fieldType(); |
| final LegacyNumericType numericType = fieldType.numericType(); |
| if (numericType != null) { |
| if (!(reuse instanceof LegacyNumericTokenStream && ((LegacyNumericTokenStream)reuse).getPrecisionStep() == fieldType.numericPrecisionStep())) { |
| // lazy init the TokenStream as it is heavy to instantiate |
| // (attributes,...) if not needed (stored field loading) |
| reuse = new LegacyNumericTokenStream(fieldType.numericPrecisionStep()); |
| } |
| final LegacyNumericTokenStream nts = (LegacyNumericTokenStream) reuse; |
| // initialize value in TokenStream |
| final Number val = (Number) fieldsData; |
| switch (numericType) { |
| case INT: |
| nts.setIntValue(val.intValue()); |
| break; |
| case LONG: |
| nts.setLongValue(val.longValue()); |
| break; |
| case FLOAT: |
| nts.setFloatValue(val.floatValue()); |
| break; |
| case DOUBLE: |
| nts.setDoubleValue(val.doubleValue()); |
| break; |
| default: |
| throw new AssertionError("Should never get here"); |
| } |
| return reuse; |
| } |
| return super.tokenStream(analyzer, reuse); |
| } |
| |
| @Override |
| public void setTokenStream(TokenStream tokenStream) { |
| final LegacyFieldType fieldType = (LegacyFieldType) fieldType(); |
| if (fieldType.numericType() != null) { |
| throw new IllegalArgumentException("cannot set private TokenStream on numeric fields"); |
| } |
| super.setTokenStream(tokenStream); |
| } |
| |
| } |