| /* |
| * 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.ignite.internal.processors.query; |
| |
| import java.util.ArrayList; |
| import java.util.Collection; |
| import java.util.Comparator; |
| import java.util.HashSet; |
| import java.util.TreeSet; |
| import org.apache.ignite.IgniteCheckedException; |
| import org.apache.ignite.cache.QueryIndexType; |
| import org.apache.ignite.internal.util.tostring.GridToStringExclude; |
| import org.apache.ignite.internal.util.typedef.T2; |
| import org.apache.ignite.internal.util.typedef.internal.S; |
| |
| /** |
| * Index descriptor. |
| */ |
| public class QueryIndexDescriptorImpl implements GridQueryIndexDescriptor { |
| /** Fields sorted by order number. */ |
| private final Collection<T2<String, Integer>> fields = new TreeSet<>( |
| new Comparator<T2<String, Integer>>() { |
| @Override public int compare(T2<String, Integer> o1, T2<String, Integer> o2) { |
| if (o1.get2().equals(o2.get2())) // Order is equal, compare field names to avoid replace in Set. |
| return o1.get1().compareTo(o2.get1()); |
| |
| return o1.get2() < o2.get2() ? -1 : 1; |
| } |
| }); |
| |
| /** Fields which should be indexed in descending order. */ |
| private Collection<String> descendings; |
| |
| /** Type descriptor. */ |
| @GridToStringExclude |
| private final QueryTypeDescriptorImpl typDesc; |
| |
| /** Index name. */ |
| private final String name; |
| |
| /** */ |
| private final QueryIndexType type; |
| |
| /** */ |
| private final int inlineSize; |
| |
| /** |
| * Constructor. |
| * |
| * @param typDesc Type descriptor. |
| * @param name Index name. |
| * @param type Type. |
| * @param inlineSize Inline size. |
| */ |
| public QueryIndexDescriptorImpl(QueryTypeDescriptorImpl typDesc, String name, QueryIndexType type, int inlineSize) { |
| assert type != null; |
| |
| this.typDesc = typDesc; |
| this.name = name; |
| this.type = type; |
| this.inlineSize = inlineSize; |
| } |
| |
| /** |
| * @return Type descriptor. |
| */ |
| public QueryTypeDescriptorImpl typeDescriptor() { |
| return typDesc; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public String name() { |
| return name; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public Collection<String> fields() { |
| Collection<String> res = new ArrayList<>(fields.size()); |
| |
| for (T2<String, Integer> t : fields) |
| res.add(t.get1()); |
| |
| return res; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public int inlineSize() { |
| return inlineSize; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public boolean descending(String field) { |
| return descendings != null && descendings.contains(field); |
| } |
| |
| /** |
| * Adds field to this index. |
| * |
| * @param field Field name. |
| * @param orderNum Field order number in this index. |
| * @param descending Sort order. |
| * @return This instance for chaining. |
| * @throws IgniteCheckedException If failed. |
| */ |
| public QueryIndexDescriptorImpl addField(String field, int orderNum, boolean descending) |
| throws IgniteCheckedException { |
| if (!typDesc.hasField(field)) |
| throw new IgniteCheckedException("Field not found: " + field); |
| |
| fields.add(new T2<>(field, orderNum)); |
| |
| if (descending) { |
| if (descendings == null) |
| descendings = new HashSet<>(); |
| |
| descendings.add(field); |
| } |
| |
| return this; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public QueryIndexType type() { |
| return type; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public String toString() { |
| return S.toString(QueryIndexDescriptorImpl.class, this); |
| } |
| } |