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| 1 | +/*- |
| 2 | + * #%L |
| 3 | + * JSQLParser library |
| 4 | + * %% |
| 5 | + * Copyright (C) 2004 - 2026 JSQLParser |
| 6 | + * %% |
| 7 | + * Dual licensed under GNU LGPL 2.1 or Apache License 2.0 |
| 8 | + * #L% |
| 9 | + */ |
| 10 | +package net.sf.jsqlparser.parser; |
| 11 | + |
| 12 | +import net.sf.jsqlparser.expression.Expression; |
| 13 | +import net.sf.jsqlparser.expression.JdbcParameter; |
| 14 | +import net.sf.jsqlparser.expression.JsonExpression; |
| 15 | +import net.sf.jsqlparser.expression.StringValue; |
| 16 | +import net.sf.jsqlparser.expression.operators.arithmetic.Concat; |
| 17 | +import net.sf.jsqlparser.expression.operators.relational.EqualsTo; |
| 18 | +import net.sf.jsqlparser.expression.operators.relational.IsBooleanExpression; |
| 19 | +import net.sf.jsqlparser.expression.operators.relational.JsonOperator; |
| 20 | +import net.sf.jsqlparser.parser.AbstractJSqlParser.Dialect; |
| 21 | +import net.sf.jsqlparser.statement.select.PlainSelect; |
| 22 | +import net.sf.jsqlparser.util.deparser.ExpressionDeParser; |
| 23 | +import net.sf.jsqlparser.util.deparser.SelectDeParser; |
| 24 | +import net.sf.jsqlparser.util.deparser.StatementDeParser; |
| 25 | +import org.junit.jupiter.api.Test; |
| 26 | +import org.junit.jupiter.params.ParameterizedTest; |
| 27 | +import org.junit.jupiter.params.provider.ValueSource; |
| 28 | + |
| 29 | +import java.util.ArrayList; |
| 30 | +import java.util.List; |
| 31 | + |
| 32 | +import static org.junit.jupiter.api.Assertions.*; |
| 33 | + |
| 34 | +class PostgreSqlJsonPathOperatorTest { |
| 35 | + private PlainSelect parse(String sql) throws Exception { |
| 36 | + return (PlainSelect) CCJSqlParserUtil.parse(sql, p -> p.withDialect(Dialect.POSTGRESQL)); |
| 37 | + } |
| 38 | + |
| 39 | + @ParameterizedTest |
| 40 | + @ValueSource(strings = { |
| 41 | + "SELECT '{\"a\":1}'::jsonb #- '{a}'", |
| 42 | + "SELECT doc#-'{a}' FROM events", |
| 43 | + "SELECT doc/*comment*/#-ARRAY['a', '0'] FROM events", |
| 44 | + "SELECT doc@?'$.a[*] ? (@ > 2)' FROM events", |
| 45 | + "SELECT NULL::jsonb @? '$.a'", |
| 46 | + "SELECT doc #- '{a}' #- '{b}' FROM events" |
| 47 | + }) |
| 48 | + void buildsJsonOperatorsAndPreservesOutput(String sql) throws Exception { |
| 49 | + PlainSelect select = parse(sql); |
| 50 | + JsonOperator operator = |
| 51 | + assertInstanceOf(JsonOperator.class, select.getSelectItem(0).getExpression()); |
| 52 | + assertEquals(sql.contains("@?") ? "@?" : "#-", operator.getStringExpression()); |
| 53 | + StringBuilder output = new StringBuilder(); |
| 54 | + select.accept(new StatementDeParser(output), null); |
| 55 | + assertEquals(select.toString(), output.toString()); |
| 56 | + assertEquals(select.toString(), parse(output.toString()).toString()); |
| 57 | + assertFalse(output.toString().contains("# -")); |
| 58 | + } |
| 59 | + |
| 60 | + @Test |
| 61 | + void preservesAssociativityAndComparisonPrecedence() throws Exception { |
| 62 | + PlainSelect select = parse("SELECT doc #- '{a}' #- '{b}' = '{}'::jsonb FROM events"); |
| 63 | + EqualsTo comparison = |
| 64 | + assertInstanceOf(EqualsTo.class, select.getSelectItem(0).getExpression()); |
| 65 | + JsonOperator deletion = |
| 66 | + assertInstanceOf(JsonOperator.class, comparison.getLeftExpression()); |
| 67 | + assertEquals("#-", deletion.getStringExpression()); |
| 68 | + assertInstanceOf(JsonOperator.class, deletion.getLeftExpression()); |
| 69 | + IsBooleanExpression predicate = assertInstanceOf(IsBooleanExpression.class, |
| 70 | + parse("SELECT doc #- '{a}' @? '$.b' IS TRUE FROM events") |
| 71 | + .getSelectItem(0).getExpression()); |
| 72 | + JsonOperator exists = assertInstanceOf(JsonOperator.class, predicate.getLeftExpression()); |
| 73 | + assertEquals("@?", exists.getStringExpression()); |
| 74 | + assertInstanceOf(JsonOperator.class, exists.getLeftExpression()); |
| 75 | + } |
| 76 | + |
| 77 | + @Test |
| 78 | + void sharesLeftAssociativityWithPostgresqlConcatenation() throws Exception { |
| 79 | + Concat concat = assertInstanceOf(Concat.class, |
| 80 | + parse("SELECT doc #- '{a}' || other FROM events").getSelectItem(0).getExpression()); |
| 81 | + assertInstanceOf(JsonOperator.class, concat.getLeftExpression()); |
| 82 | + JsonOperator deletion = assertInstanceOf(JsonOperator.class, |
| 83 | + parse("SELECT doc || other #- '{a}' FROM events").getSelectItem(0).getExpression()); |
| 84 | + assertInstanceOf(Concat.class, deletion.getLeftExpression()); |
| 85 | + } |
| 86 | + |
| 87 | + @Test |
| 88 | + void composesAccessAndPathOperatorsInBothParserModes() throws Exception { |
| 89 | + for (boolean complex : List.of(false, true)) { |
| 90 | + for (String operator : List.of("->", "#>")) { |
| 91 | + CCJSqlParser parser = CCJSqlParserUtil.newParser( |
| 92 | + "SELECT doc " + operator + " '{a}' #- '{b}' FROM events") |
| 93 | + .withDialect(Dialect.POSTGRESQL).withAllowComplexParsing(complex); |
| 94 | + JsonOperator deletion = assertInstanceOf(JsonOperator.class, |
| 95 | + ((PlainSelect) parser.Statement()).getSelectItem(0).getExpression()); |
| 96 | + JsonExpression access = |
| 97 | + assertInstanceOf(JsonExpression.class, deletion.getLeftExpression()); |
| 98 | + assertInstanceOf(StringValue.class, access.getIdentList().get(0).getKey()); |
| 99 | + } |
| 100 | + CCJSqlParser parser = CCJSqlParserUtil.newParser( |
| 101 | + "SELECT doc #- '{a}' ->> 'b' = 'x' FROM events") |
| 102 | + .withDialect(Dialect.POSTGRESQL).withAllowComplexParsing(complex); |
| 103 | + EqualsTo comparison = assertInstanceOf(EqualsTo.class, |
| 104 | + ((PlainSelect) parser.Statement()).getSelectItem(0).getExpression()); |
| 105 | + JsonExpression access = |
| 106 | + assertInstanceOf(JsonExpression.class, comparison.getLeftExpression()); |
| 107 | + assertInstanceOf(JsonOperator.class, access.getExpression()); |
| 108 | + assertInstanceOf(StringValue.class, access.getIdentList().get(0).getKey()); |
| 109 | + } |
| 110 | + } |
| 111 | + |
| 112 | + @Test |
| 113 | + void distinguishesPathOperatorFromParametersAndVisitsOperands() throws Exception { |
| 114 | + PlainSelect select = parse("SELECT doc @? ? FROM events WHERE doc #- ? = ?::jsonb"); |
| 115 | + JsonOperator exists = (JsonOperator) select.getSelectItem(0).getExpression(); |
| 116 | + assertEquals(1, ((JdbcParameter) exists.getRightExpression()).getIndex()); |
| 117 | + EqualsTo comparison = (EqualsTo) select.getWhere(); |
| 118 | + JsonOperator deletion = (JsonOperator) comparison.getLeftExpression(); |
| 119 | + assertEquals(2, ((JdbcParameter) deletion.getRightExpression()).getIndex()); |
| 120 | + |
| 121 | + List<String> visited = new ArrayList<>(); |
| 122 | + ExpressionDeParser expressions = new ExpressionDeParser() { |
| 123 | + @Override |
| 124 | + public <S> StringBuilder visit(StringValue value, S context) { |
| 125 | + visited.add(value.getValue()); |
| 126 | + return getBuilder().append("'changed'"); |
| 127 | + } |
| 128 | + }; |
| 129 | + StringBuilder output = new StringBuilder(); |
| 130 | + parse("SELECT doc #- '{a}' @? '$.b' FROM events") |
| 131 | + .accept(new StatementDeParser(expressions, new SelectDeParser(), output), null); |
| 132 | + assertEquals(List.of("{a}", "$.b"), visited); |
| 133 | + assertEquals("SELECT doc #- 'changed' @? 'changed' FROM events", output.toString()); |
| 134 | + } |
| 135 | + |
| 136 | + @Test |
| 137 | + void retainsExistingHashAndJsonOperators() throws Exception { |
| 138 | + for (String sql : List.of("SELECT 5 # -1", "SELECT doc #> '{a}' FROM events", |
| 139 | + "SELECT doc #>> '{a}' FROM events", "SELECT doc ? 'a' FROM events", |
| 140 | + "SELECT doc @@ '$.a > 2' FROM events")) { |
| 141 | + assertEquals(parse(sql).toString(), parse(parse(sql).toString()).toString()); |
| 142 | + } |
| 143 | + Expression expression = parse("SELECT doc #- '{a}' FROM events") |
| 144 | + .getSelectItem(0).getExpression(); |
| 145 | + ((JsonOperator) expression).setRightExpression(new StringValue("{b}")); |
| 146 | + assertEquals("doc #- '{b}'", expression.toString()); |
| 147 | + } |
| 148 | + |
| 149 | + @ParameterizedTest |
| 150 | + @ValueSource(strings = {"SELECT '{}'::jsonb #-", "SELECT '{}'::jsonb @?", |
| 151 | + "SELECT '{}'::jsonb @? , 1"}) |
| 152 | + void requiresRightOperand(String sql) { |
| 153 | + assertThrows(net.sf.jsqlparser.JSQLParserException.class, () -> parse(sql)); |
| 154 | + } |
| 155 | + |
| 156 | + @Test |
| 157 | + void retainsAtSignIdentifierBehaviorInOtherDialects() throws Exception { |
| 158 | + for (Dialect dialect : List.of(Dialect.SQLSERVER, Dialect.MYSQL)) { |
| 159 | + PlainSelect select = (PlainSelect) CCJSqlParserUtil.parse("SELECT name@host FROM users", |
| 160 | + p -> p.withDialect(dialect)); |
| 161 | + assertEquals("name@host", select.getSelectItem(0).getExpression().toString()); |
| 162 | + } |
| 163 | + CCJSqlParser parser = CCJSqlParserUtil.newParser("doc@?'$.a'") |
| 164 | + .withDialect(Dialect.POSTGRESQL); |
| 165 | + assertEquals("doc", parser.getNextToken().image); |
| 166 | + Token operator = parser.getNextToken(); |
| 167 | + assertEquals("@?", operator.image); |
| 168 | + assertEquals(4, operator.beginColumn); |
| 169 | + assertEquals(5, operator.endColumn); |
| 170 | + } |
| 171 | +} |
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