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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.expression; |
| 11 | + |
| 12 | +import net.sf.jsqlparser.JSQLParserException; |
| 13 | +import net.sf.jsqlparser.expression.JsonTableFunction.JsonTableValueColumnDefinition; |
| 14 | +import net.sf.jsqlparser.parser.AbstractJSqlParser.Dialect; |
| 15 | +import net.sf.jsqlparser.statement.select.PlainSelect; |
| 16 | +import net.sf.jsqlparser.statement.select.TableFunction; |
| 17 | +import net.sf.jsqlparser.test.TestUtils; |
| 18 | +import org.junit.jupiter.api.Test; |
| 19 | +import org.junit.jupiter.params.ParameterizedTest; |
| 20 | +import org.junit.jupiter.params.provider.ValueSource; |
| 21 | + |
| 22 | +import java.util.ArrayList; |
| 23 | +import java.util.List; |
| 24 | + |
| 25 | +import static org.junit.jupiter.api.Assertions.*; |
| 26 | + |
| 27 | +class JsonTableResponseTest { |
| 28 | + @ParameterizedTest |
| 29 | + @ValueSource(strings = { |
| 30 | + "DEFAULT '9' ON ERROR", |
| 31 | + "DEFAULT '0' ON EMPTY DEFAULT '9' ON ERROR", |
| 32 | + "DEFAULT '9' ON ERROR DEFAULT '0' ON EMPTY", |
| 33 | + "NULL ON EMPTY DEFAULT '9' ON ERROR", |
| 34 | + "ERROR ON EMPTY DEFAULT '9' ON ERROR" |
| 35 | + }) |
| 36 | + void defaultsRoundTripInEitherOrder(String response) throws JSQLParserException { |
| 37 | + String sql = sql("n INT PATH '$.n' " + response); |
| 38 | + for (Dialect dialect : new Dialect[] {null, Dialect.MYSQL, Dialect.ORACLE}) { |
| 39 | + PlainSelect select = (PlainSelect) TestUtils.assertSqlCanBeParsedAndDeparsed(sql, |
| 40 | + true, parser -> { |
| 41 | + if (dialect != null) { |
| 42 | + parser.withDialect(dialect); |
| 43 | + } |
| 44 | + }); |
| 45 | + TestUtils.assertSqlCanBeParsedAndDeparsed(select.toString(), false, |
| 46 | + parser -> { |
| 47 | + if (dialect != null) { |
| 48 | + parser.withDialect(dialect); |
| 49 | + } |
| 50 | + }); |
| 51 | + } |
| 52 | + } |
| 53 | + |
| 54 | + @Test |
| 55 | + void defaultExpressionsAreVisitedAndEditable() throws JSQLParserException { |
| 56 | + PlainSelect select = (PlainSelect) TestUtils.assertSqlCanBeParsedAndDeparsed( |
| 57 | + sql("n INT PATH '$.n' DEFAULT '0' ON EMPTY DEFAULT '9' ON ERROR")); |
| 58 | + JsonTableFunction table = |
| 59 | + (JsonTableFunction) ((TableFunction) select.getFromItem()).getFunction(); |
| 60 | + JsonTableValueColumnDefinition column = |
| 61 | + (JsonTableValueColumnDefinition) table.getColumnsClause().getColumnDefinitions() |
| 62 | + .get(0); |
| 63 | + assertEquals(JsonFunction.JsonOnResponseBehaviorType.DEFAULT, |
| 64 | + column.getOnErrorBehavior().getType()); |
| 65 | + assertEquals("9", ((StringValue) column.getOnErrorBehavior().getExpression()).getValue()); |
| 66 | + List<String> visited = new ArrayList<>(); |
| 67 | + table.accept(new ExpressionVisitorAdapter<Void>() { |
| 68 | + @Override |
| 69 | + public <S> Void visit(StringValue value, S context) { |
| 70 | + visited.add(value.getValue()); |
| 71 | + if ("9".equals(value.getValue())) { |
| 72 | + value.setValue("7"); |
| 73 | + } |
| 74 | + return null; |
| 75 | + } |
| 76 | + }, null); |
| 77 | + assertTrue(visited.containsAll(List.of("$.n", "0", "9"))); |
| 78 | + TestUtils.assertStatementCanBeDeparsedAs(select, |
| 79 | + sql("n INT PATH '$.n' DEFAULT '0' ON EMPTY DEFAULT '7' ON ERROR"), true); |
| 80 | + column.setOnErrorBehavior(new JsonFunction.JsonOnResponseBehavior( |
| 81 | + JsonFunction.JsonOnResponseBehaviorType.DEFAULT, new StringValue("8"))); |
| 82 | + column.setOnEmptyAfterOnError(true); |
| 83 | + TestUtils.assertStatementCanBeDeparsedAs(select, |
| 84 | + sql("n INT PATH '$.n' DEFAULT '8' ON ERROR DEFAULT '0' ON EMPTY"), true); |
| 85 | + TestUtils.assertSqlCanBeParsedAndDeparsed(select.toString()); |
| 86 | + } |
| 87 | + |
| 88 | + @Test |
| 89 | + void nestedDefaultsRoundTrip() throws JSQLParserException { |
| 90 | + TestUtils.assertSqlCanBeParsedAndDeparsed(sql( |
| 91 | + "NESTED PATH '$.items[*]' COLUMNS (n INT PATH '$.n' DEFAULT '9' ON ERROR)")); |
| 92 | + } |
| 93 | + |
| 94 | + @ParameterizedTest |
| 95 | + @ValueSource( |
| 96 | + strings = {"NULL", "ERROR", "TRUE", "FALSE", "EMPTY", "EMPTY ARRAY", "EMPTY OBJECT"}) |
| 97 | + void sharedNonDefaultResponsesRoundTrip(String behavior) throws JSQLParserException { |
| 98 | + TestUtils.assertSqlCanBeParsedAndDeparsed(sql("n PATH '$.n' " + behavior + " ON ERROR")); |
| 99 | + TestUtils.assertSqlCanBeParsedAndDeparsed(sql("n PATH '$.n' " + behavior + " ON EMPTY")); |
| 100 | + } |
| 101 | + |
| 102 | + private static String sql(String column) { |
| 103 | + return "SELECT * FROM JSON_TABLE('[{\"n\":1},{},{\"n\":\"bad\"}]', '$[*]' COLUMNS (" |
| 104 | + + column + ")) AS jt"; |
| 105 | + } |
| 106 | +} |
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