1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
|
/**
* ============LICENSE_START=======================================================
* org.onap.aai
* ================================================================================
* Copyright © 2017-2018 AT&T Intellectual Property. All rights reserved.
* ================================================================================
* Modifications Copyright © 2024 Deutsche Telekom SA.
* ================================================================================
* Licensed 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.
* ============LICENSE_END=========================================================
*/
package org.onap.aai.rest.dsl;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.nio.charset.StandardCharsets;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.antlr.v4.runtime.*;
import org.antlr.v4.runtime.misc.ParseCancellationException;
import org.antlr.v4.runtime.tree.ParseTree;
import org.antlr.v4.runtime.tree.ParseTreeWalker;
import org.onap.aai.config.SpringContextAware;
import org.onap.aai.dsl.v2.AAIDslLexer;
import org.onap.aai.dsl.v2.AAIDslParser;
import org.onap.aai.exceptions.AAIException;
import org.onap.aai.rest.dsl.v2.DslListener;
import org.onap.aai.rest.dsl.validation.DslValidator;
import org.onap.aai.rest.enums.QueryVersion;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.context.annotation.Scope;
import org.springframework.stereotype.Component;
/**
* The Class DslQueryProcessor.
*/
@Component
@Scope("prototype")
public class V2DslQueryProcessor extends DslQueryProcessor {
private static final Logger LOGGER = LoggerFactory.getLogger(V2DslQueryProcessor.class);
@Override
protected Map<String, Object> getQueryResultMap(String aaiQuery) throws IOException, AAIException {
// Create a input stream that reads our string
InputStream stream =
new ByteArrayInputStream(aaiQuery.getBytes(StandardCharsets.UTF_8));
Lexer lexer = new AAIDslLexer(CharStreams.fromStream(stream, StandardCharsets.UTF_8));
lexer.removeErrorListeners();
lexer.addErrorListener(new AAIDslErrorListener());
CommonTokenStream tokens = new CommonTokenStream(lexer);
// Parser that feeds off of the tokens buffer
AAIDslParser parser = new AAIDslParser(tokens);
parser.removeErrorListeners();
parser.addErrorListener(new AAIDslErrorListener());
ParseTree ptree = parser.aaiquery();
validateQueryIsParsable(tokens);
if (LOGGER.isInfoEnabled()) {
LOGGER.info("QUERY-interim {}", ptree.toStringTree(parser));
}
DslListener dslListener = SpringContextAware.getApplicationContext().getBean(DslListener.class);
dslListener.setValidationFlag(hasStartNodeValidationFlag());
dslListener.setAggregateFlag(isAggregate());
if (!getValidationRules().isEmpty() && !"none".equals(getValidationRules())) {
DslValidator validator = new DslValidator.Builder().create();
dslListener.setQueryValidator(validator, getValidationRules());
}
// Walk it and attach our listener
ParseTreeWalker walker = new ParseTreeWalker();
walker.walk(dslListener, ptree);
String query = dslListener.getQuery();
Map<String, Object> resultMap = new HashMap<>();
resultMap.put("query", query);
Map<String, List<String>> selectKeys = dslListener.getSelectKeys();
if (selectKeys != null && !selectKeys.isEmpty()) {
resultMap.put("propertiesMap", selectKeys);
}
LOGGER.info("Final QUERY {}", query);
return resultMap;
}
}
|
