|
| 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.statement.alter; |
| 11 | + |
| 12 | +import static org.junit.jupiter.api.Assertions.assertEquals; |
| 13 | +import static org.junit.jupiter.api.Assertions.assertInstanceOf; |
| 14 | +import static org.junit.jupiter.api.Assertions.assertThrows; |
| 15 | +import static org.junit.jupiter.api.Assertions.assertTrue; |
| 16 | + |
| 17 | +import java.util.List; |
| 18 | +import net.sf.jsqlparser.JSQLParserException; |
| 19 | +import net.sf.jsqlparser.expression.LongValue; |
| 20 | +import net.sf.jsqlparser.parser.AbstractJSqlParser.Dialect; |
| 21 | +import net.sf.jsqlparser.parser.CCJSqlParserUtil; |
| 22 | +import net.sf.jsqlparser.statement.create.table.CheckConstraint; |
| 23 | +import net.sf.jsqlparser.statement.create.table.CreateTable; |
| 24 | +import net.sf.jsqlparser.statement.create.table.Index; |
| 25 | +import net.sf.jsqlparser.statement.create.table.NamedConstraint; |
| 26 | +import net.sf.jsqlparser.util.deparser.ExpressionDeParser; |
| 27 | +import net.sf.jsqlparser.util.deparser.SelectDeParser; |
| 28 | +import net.sf.jsqlparser.util.deparser.StatementDeParser; |
| 29 | +import org.junit.jupiter.api.Test; |
| 30 | +import org.junit.jupiter.params.ParameterizedTest; |
| 31 | +import org.junit.jupiter.params.provider.ValueSource; |
| 32 | + |
| 33 | +class MySqlAlterConstraintTest { |
| 34 | + @ParameterizedTest |
| 35 | + @ValueSource(strings = { |
| 36 | + "CONSTRAINT uq UNIQUE KEY idx (id)", |
| 37 | + "CONSTRAINT uq UNIQUE INDEX idx USING BTREE (id DESC) COMMENT 'unique id'", |
| 38 | + "CONSTRAINT `unique id` UNIQUE KEY `index id` (id)", |
| 39 | + "CONSTRAINT UNIQUE KEY idx (id)", |
| 40 | + "CONSTRAINT uq UNIQUE (id)", |
| 41 | + "UNIQUE KEY idx (id)", |
| 42 | + "CONSTRAINT pk PRIMARY KEY (id)", |
| 43 | + "CONSTRAINT PRIMARY KEY (id)", |
| 44 | + "CHECK (id > 0)", |
| 45 | + "CONSTRAINT CHECK (id > 0) NOT ENFORCED", |
| 46 | + "CONSTRAINT positive CHECK (id > 0) ENFORCED", |
| 47 | + "CONSTRAINT fk FOREIGN KEY parent_idx (id) REFERENCES parent (id) ON DELETE CASCADE" |
| 48 | + }) |
| 49 | + void createAndAlterExposeTheSameConstraint(String definition) throws JSQLParserException { |
| 50 | + CreateTable create = (CreateTable) CCJSqlParserUtil.parse( |
| 51 | + "CREATE TABLE t (id INT, " + definition + ")", p -> p.withDialect(Dialect.MYSQL)); |
| 52 | + Alter alter = parse("ALTER TABLE t ADD " + definition + ", ADD COLUMN other INT"); |
| 53 | + Index actual = alter.getAlterExpressions().get(0).getIndex(); |
| 54 | + assertEquals(create.getIndexes().get(0).getClass(), actual.getClass()); |
| 55 | + assertEquals(create.getIndexes().get(0).toString(), actual.toString()); |
| 56 | + assertEquals(2, alter.getAlterExpressions().size()); |
| 57 | + assertRoundTrip(alter); |
| 58 | + } |
| 59 | + |
| 60 | + @Test |
| 61 | + void constraintAndIndexNamesCanBeEditedIndependently() throws JSQLParserException { |
| 62 | + Alter alter = parse("ALTER TABLE t ADD CONSTRAINT uq UNIQUE KEY idx (id)"); |
| 63 | + NamedConstraint unique = assertInstanceOf(NamedConstraint.class, |
| 64 | + alter.getAlterExpressions().get(0).getIndex()); |
| 65 | + assertEquals("uq", unique.getName()); |
| 66 | + assertEquals("idx", unique.getIndexName()); |
| 67 | + assertEquals(Index.Kind.UNIQUE, unique.getKind()); |
| 68 | + unique.setName("new_constraint"); |
| 69 | + unique.setIndexName("new_index"); |
| 70 | + assertEquals("ALTER TABLE t ADD CONSTRAINT new_constraint UNIQUE KEY new_index (id)", |
| 71 | + alter.toString()); |
| 72 | + assertRoundTrip(alter); |
| 73 | + } |
| 74 | + |
| 75 | + @Test |
| 76 | + void unnamedCheckRetainsKeywordEnforcementAndExpressionVisitor() throws JSQLParserException { |
| 77 | + Alter alter = parse("ALTER TABLE t ADD CONSTRAINT CHECK (id > 0) NOT ENFORCED"); |
| 78 | + CheckConstraint check = assertInstanceOf(CheckConstraint.class, |
| 79 | + alter.getAlterExpressions().get(0).getIndex()); |
| 80 | + assertTrue(check.isUseConstraintKeyword()); |
| 81 | + assertEquals(Boolean.FALSE, check.getEnforced()); |
| 82 | + StringBuilder buffer = new StringBuilder(); |
| 83 | + ExpressionDeParser expressions = new ExpressionDeParser() { |
| 84 | + @Override |
| 85 | + public <S> StringBuilder visit(LongValue value, S context) { |
| 86 | + return getBuilder().append(10); |
| 87 | + } |
| 88 | + }; |
| 89 | + alter.accept(new StatementDeParser(expressions, new SelectDeParser(), buffer), null); |
| 90 | + assertEquals("ALTER TABLE t ADD CONSTRAINT CHECK (id > 10) NOT ENFORCED", |
| 91 | + buffer.toString()); |
| 92 | + assertRoundTrip(parse(buffer.toString())); |
| 93 | + } |
| 94 | + |
| 95 | + @Test |
| 96 | + void sharedIndexStillProvidesLegacyPrimaryKeyColumns() throws JSQLParserException { |
| 97 | + AlterExpression primary = parse("ALTER TABLE t ADD CONSTRAINT pk PRIMARY KEY (id)") |
| 98 | + .getAlterExpressions().get(0); |
| 99 | + assertEquals(List.of("id"), primary.getPkColumns()); |
| 100 | + } |
| 101 | + |
| 102 | + @ParameterizedTest |
| 103 | + @ValueSource(strings = {"CHECK", "CHECK ()", "CONSTRAINT CHECK (id > 0) (id < 10)", |
| 104 | + "CONSTRAINT uq UNIQUE KEY idx ()"}) |
| 105 | + void rejectsIncompleteOrRepeatedConstraintBodies(String definition) { |
| 106 | + assertThrows(JSQLParserException.class, () -> parse("ALTER TABLE t ADD " + definition)); |
| 107 | + } |
| 108 | + |
| 109 | + private static Alter parse(String sql) throws JSQLParserException { |
| 110 | + return (Alter) CCJSqlParserUtil.parse(sql, p -> p.withDialect(Dialect.MYSQL)); |
| 111 | + } |
| 112 | + |
| 113 | + private static void assertRoundTrip(Alter alter) throws JSQLParserException { |
| 114 | + StringBuilder buffer = new StringBuilder(); |
| 115 | + alter.accept(new StatementDeParser(buffer), null); |
| 116 | + assertEquals(alter.toString(), buffer.toString()); |
| 117 | + assertEquals(alter.toString(), parse(buffer.toString()).toString()); |
| 118 | + } |
| 119 | +} |
0 commit comments