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/*
* 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 com.datastax.oss.driver.internal.core.data;
import com.datastax.oss.driver.api.core.CqlIdentifier;
import com.datastax.oss.driver.api.core.data.AccessibleByName;
import com.datastax.oss.driver.api.core.data.GettableById;
import com.datastax.oss.driver.api.core.data.GettableByName;
import com.datastax.oss.driver.internal.core.util.Strings;
import com.datastax.oss.driver.shaded.guava.common.collect.ImmutableListMultimap;
import com.datastax.oss.driver.shaded.guava.common.collect.ListMultimap;
import java.util.Iterator;
import java.util.List;
import java.util.Locale;
import net.jcip.annotations.Immutable;
/**
* Indexes an ordered list of identifiers.
*
* @see GettableByName
* @see GettableById
*/
@Immutable
public class IdentifierIndex {
private final ListMultimap byId;
private final ListMultimap byCaseSensitiveName;
private final ListMultimap byCaseInsensitiveName;
public IdentifierIndex(List ids) {
ImmutableListMultimap.Builder byId = ImmutableListMultimap.builder();
ImmutableListMultimap.Builder byCaseSensitiveName =
ImmutableListMultimap.builder();
ImmutableListMultimap.Builder byCaseInsensitiveName =
ImmutableListMultimap.builder();
int i = 0;
for (CqlIdentifier id : ids) {
byId.put(id, i);
byCaseSensitiveName.put(id.asInternal(), i);
byCaseInsensitiveName.put(id.asInternal().toLowerCase(Locale.ROOT), i);
i += 1;
}
this.byId = byId.build();
this.byCaseSensitiveName = byCaseSensitiveName.build();
this.byCaseInsensitiveName = byCaseInsensitiveName.build();
}
/**
* Returns all occurrences of a given name, given the matching rules described in {@link
* AccessibleByName}.
*/
public List allIndicesOf(String name) {
return Strings.isDoubleQuoted(name)
? byCaseSensitiveName.get(Strings.unDoubleQuote(name))
: byCaseInsensitiveName.get(name.toLowerCase(Locale.ROOT));
}
/**
* Returns the first occurrence of a given name, given the matching rules described in {@link
* AccessibleByName}, or -1 if it's not in the list.
*/
public int firstIndexOf(String name) {
Iterator indices = allIndicesOf(name).iterator();
return indices.hasNext() ? indices.next() : -1;
}
/** Returns all occurrences of a given identifier. */
public List allIndicesOf(CqlIdentifier id) {
return byId.get(id);
}
/** Returns the first occurrence of a given identifier, or -1 if it's not in the list. */
public int firstIndexOf(CqlIdentifier id) {
Iterator indices = allIndicesOf(id).iterator();
return indices.hasNext() ? indices.next() : -1;
}
}