#9917

Committed 24 Aug 2023 04:16PM UTC coverage: 47.861% (+0.009%) from 47.852%

Build # #9917

Build Type

push

travis_ci

Committed by

web-flow

Commit Message

Feature/streamlined grafana plugin profile (#10907)

Run Details

80245 of 167662 relevant lines covered (47.86%)

0.48 hits per line

Source File
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93.33

/iotdb-core/node-commons/src/main/java/org/apache/iotdb/commons/path/fa/FAFactory.java

/*
 * 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.iotdb.commons.path.fa;

import org.apache.iotdb.commons.path.fa.dfa.PatternDFA;
import org.apache.iotdb.commons.path.fa.nfa.SimpleNFA;
import org.apache.iotdb.commons.schema.SchemaConstant;

import com.github.benmanes.caffeine.cache.Caffeine;
import com.github.benmanes.caffeine.cache.LoadingCache;

public class FAFactory {

  private final LoadingCache<IPatternFA.Builder, PatternDFA> dfaCache;
  private static final int DFA_CACHE_SIZE = 20;

  public IPatternFA constructDFA(IPatternFA.Builder builder) {
    return dfaCache.get(builder);
  }

  public IPatternFA constructNFA(IPatternFA.Builder builder) {
    return new SimpleNFA(builder.getPathPattern(), builder.isPrefixMatch());
  }

  private FAFactory() {
    dfaCache =
        Caffeine.newBuilder()
            .maximumSize(DFA_CACHE_SIZE)
            .build(
                builder -> {
                  if (builder.getPatternTree() != null) {
                    if (builder.getPatternTree().equals(SchemaConstant.ALL_MATCH_PATTERN_TREE)) {
                      // always return the same instance for root.**
                      return SchemaConstant.ALL_MATCH_DFA;
                    }
                    return new PatternDFA(builder.getPatternTree());
                  } else {
                    return new PatternDFA(builder.getPathPattern(), builder.isPrefixMatch());
                  }
                });
  }

  public static FAFactory getInstance() {
    return FAFactoryHolder.INSTANCE;
  }

  /** singleton pattern. */
  private static class FAFactoryHolder {
    private static final FAFactory INSTANCE = new FAFactory();
  }
}

1	/*
2	* Licensed to the Apache Software Foundation (ASF) under one
3	* or more contributor license agreements. See the NOTICE file
4	* distributed with this work for additional information
5	* regarding copyright ownership. The ASF licenses this file
6	* to you under the Apache License, Version 2.0 (the
7	* "License"); you may not use this file except in compliance
8	* with the License. You may obtain a copy of the License at
9	*
10	* http://www.apache.org/licenses/LICENSE-2.0
11	*
12	* Unless required by applicable law or agreed to in writing,
13	* software distributed under the License is distributed on an
14	* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15	* KIND, either express or implied. See the License for the
16	* specific language governing permissions and limitations
17	* under the License.
18	*/
19	package org.apache.iotdb.commons.path.fa;
20
21	import org.apache.iotdb.commons.path.fa.dfa.PatternDFA;
22	import org.apache.iotdb.commons.path.fa.nfa.SimpleNFA;
23	import org.apache.iotdb.commons.schema.SchemaConstant;
24
25	import com.github.benmanes.caffeine.cache.Caffeine;
26	import com.github.benmanes.caffeine.cache.LoadingCache;
27
28	public class FAFactory {
29
30	private final LoadingCache<IPatternFA.Builder, PatternDFA> dfaCache;
31	private static final int DFA_CACHE_SIZE = 20;
32
33	public IPatternFA constructDFA(IPatternFA.Builder builder) {
34	return dfaCache.get(builder);	1✔
35	}
36
37	public IPatternFA constructNFA(IPatternFA.Builder builder) {
38	return new SimpleNFA(builder.getPathPattern(), builder.isPrefixMatch());	1✔
39	}
40
41	private FAFactory() {	1✔
42	dfaCache =	1✔
43	Caffeine.newBuilder()	1✔
44	.maximumSize(DFA_CACHE_SIZE)	1✔
45	.build(	1✔
46	builder -> {
47	if (builder.getPatternTree() != null) {	1✔
48	if (builder.getPatternTree().equals(SchemaConstant.ALL_MATCH_PATTERN_TREE)) {	1✔
49	// always return the same instance for root.**
50	return SchemaConstant.ALL_MATCH_DFA;	×
51	}
52	return new PatternDFA(builder.getPatternTree());	1✔
53	} else {
54	return new PatternDFA(builder.getPathPattern(), builder.isPrefixMatch());	1✔
55	}
56	});
57	}	1✔
58
59	public static FAFactory getInstance() {
60	return FAFactoryHolder.INSTANCE;	1✔
61	}
62
63	/** singleton pattern. */
64	private static class FAFactoryHolder {
65	private static final FAFactory INSTANCE = new FAFactory();	1✔
66	}
67	}

apache / iotdb / #9917

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