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| 1 | +/*- |
| 2 | + * #%L |
| 3 | + * JSQLParser library |
| 4 | + * %% |
| 5 | + * Copyright (C) 2004 - 2019 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.assertTrue; |
| 14 | +import static org.junit.jupiter.api.Assertions.assertFalse; |
| 15 | +import static org.junit.jupiter.api.Assertions.assertThrows; |
| 16 | +import net.sf.jsqlparser.statement.create.table.CheckConstraint; |
| 17 | +import net.sf.jsqlparser.util.deparser.ExpressionDeParser; |
| 18 | +import net.sf.jsqlparser.schema.Column; |
| 19 | +import net.sf.jsqlparser.util.deparser.TableElementDeParser; |
| 20 | +import net.sf.jsqlparser.util.TablesNamesFinder; |
| 21 | +import net.sf.jsqlparser.test.TestUtils; |
| 22 | +import java.util.Set; |
| 23 | +import java.util.List; |
| 24 | +import java.util.stream.Stream; |
| 25 | +import net.sf.jsqlparser.JSQLParserException; |
| 26 | +import net.sf.jsqlparser.parser.CCJSqlParserUtil; |
| 27 | +import net.sf.jsqlparser.statement.Statements; |
| 28 | +import net.sf.jsqlparser.statement.create.table.ForeignKeyIndex; |
| 29 | +import net.sf.jsqlparser.statement.create.table.NamedConstraint; |
| 30 | +import net.sf.jsqlparser.statement.create.table.NamedConstraint.ConstraintNamePosition; |
| 31 | +import net.sf.jsqlparser.util.deparser.StatementDeParser; |
| 32 | +import org.junit.jupiter.api.Test; |
| 33 | +import org.junit.jupiter.params.ParameterizedTest; |
| 34 | +import org.junit.jupiter.params.provider.MethodSource; |
| 35 | + |
| 36 | +class InformixConstraintTest { |
| 37 | + static Stream<String> definitions() { |
| 38 | + return Stream.of("PRIMARY KEY (column)", "UNIQUE (column)", |
| 39 | + "FOREIGN KEY (column) REFERENCES referenced_table(referenced_column)", |
| 40 | + "CHECK (id > 0)", "PRIMARY KEY (id, tenant_id)", |
| 41 | + "FOREIGN KEY (id, tenant_id) REFERENCES parent(id, tenant_id) ON DELETE CASCADE"); |
| 42 | + } |
| 43 | + |
| 44 | + @ParameterizedTest |
| 45 | + @MethodSource("definitions") |
| 46 | + void preservesNamePlacement(String definition) throws Exception { |
| 47 | + for (String suffix : List.of("", " CONSTRAINT constraint_name", |
| 48 | + " CONSTRAINT \"constraint name\"")) { |
| 49 | + String sql = "ALTER TABLE table_name ADD CONSTRAINT " + definition + suffix; |
| 50 | + TestUtils.assertSqlCanBeParsedAndDeparsed(sql); |
| 51 | + Alter statement = (Alter) CCJSqlParserUtil.parse(sql); |
| 52 | + NamedConstraint constraint = |
| 53 | + (NamedConstraint) statement.getAlterExpressions().get(0).getIndex(); |
| 54 | + assertEquals(ConstraintNamePosition.AFTER, constraint.getConstraintNamePosition()); |
| 55 | + assertTrue(constraint.isUseConstraintKeyword()); |
| 56 | + assertEquals(suffix.isEmpty() ? null : suffix.substring(" CONSTRAINT ".length()), |
| 57 | + constraint.getName()); |
| 58 | + StringBuilder deparsed = new StringBuilder(); |
| 59 | + statement.accept(new StatementDeParser(deparsed), null); |
| 60 | + assertEquals(statement.toString(), deparsed.toString()); |
| 61 | + assertEquals(statement.toString(), |
| 62 | + CCJSqlParserUtil.parse(deparsed.toString()).toString()); |
| 63 | + assertTrue(statement.toString().contains("ADD CONSTRAINT " + definition)); |
| 64 | + if (!suffix.isEmpty()) { |
| 65 | + assertTrue(statement.toString().endsWith(suffix)); |
| 66 | + } |
| 67 | + } |
| 68 | + } |
| 69 | + |
| 70 | + @Test |
| 71 | + void exposesForeignKeyAndMutableName() throws Exception { |
| 72 | + Alter statement = (Alter) CCJSqlParserUtil.parse( |
| 73 | + "ALTER TABLE child ADD CONSTRAINT FOREIGN KEY (id) REFERENCES parent(id) CONSTRAINT fk_child"); |
| 74 | + ForeignKeyIndex key = (ForeignKeyIndex) statement.getAlterExpressions().get(0).getIndex(); |
| 75 | + assertEquals(List.of("id"), key.getColumnsNames()); |
| 76 | + assertEquals("parent", key.getTable().getName()); |
| 77 | + assertEquals(List.of("id"), key.getReferencedColumnNames()); |
| 78 | + key.setName("renamed_fk"); |
| 79 | + assertTrue(statement.toString().endsWith("REFERENCES parent(id) CONSTRAINT renamed_fk")); |
| 80 | + key.setName((String) null); |
| 81 | + assertFalse(statement.toString().contains("fk_child")); |
| 82 | + assertEquals(statement.toString(), CCJSqlParserUtil.parse(statement.toString()).toString()); |
| 83 | + } |
| 84 | + |
| 85 | + @Test |
| 86 | + void keepsFollowingAlterActionsAndStatements() throws Exception { |
| 87 | + String sql = |
| 88 | + "ALTER TABLE t ADD CONSTRAINT PRIMARY KEY (id) CONSTRAINT pk_t, ADD COLUMN note INT; SELECT 1;"; |
| 89 | + Statements statements = CCJSqlParserUtil.parseStatements(sql); |
| 90 | + assertEquals(2, statements.size()); |
| 91 | + assertEquals(2, ((Alter) statements.get(0)).getAlterExpressions().size()); |
| 92 | + } |
| 93 | + |
| 94 | + @Test |
| 95 | + void retainsLeadingNamesAndBuilders() throws Exception { |
| 96 | + NamedConstraint built = new NamedConstraint().withType("PRIMARY KEY").withName("pk_t") |
| 97 | + .withColumnsNames(List.of("id")); |
| 98 | + assertEquals(ConstraintNamePosition.BEFORE, built.getConstraintNamePosition()); |
| 99 | + assertEquals("CONSTRAINT pk_t PRIMARY KEY (id)", built.toString()); |
| 100 | + for (String definition : List.of("PRIMARY KEY (id)", "UNIQUE (id)", |
| 101 | + "FOREIGN KEY (id) REFERENCES parent(id)", "CHECK (id > 0)")) { |
| 102 | + Alter statement = |
| 103 | + (Alter) CCJSqlParserUtil.parse("ALTER TABLE t ADD CONSTRAINT c " + definition); |
| 104 | + assertEquals(ConstraintNamePosition.BEFORE, |
| 105 | + ((NamedConstraint) statement.getAlterExpressions().get(0).getIndex()) |
| 106 | + .getConstraintNamePosition()); |
| 107 | + assertTrue(statement.toString().contains("CONSTRAINT c " + definition)); |
| 108 | + } |
| 109 | + } |
| 110 | + |
| 111 | + @Test |
| 112 | + void keepsCheckExpressionVisitorAndForeignTableTraversal() throws Exception { |
| 113 | + Alter statement = (Alter) CCJSqlParserUtil |
| 114 | + .parse("ALTER TABLE child ADD CONSTRAINT CHECK (id > 0) CONSTRAINT positive_id"); |
| 115 | + CheckConstraint check = |
| 116 | + (CheckConstraint) statement |
| 117 | + .getAlterExpressions().get(0).getIndex(); |
| 118 | + StringBuilder builder = new StringBuilder(); |
| 119 | + ExpressionDeParser visitor = |
| 120 | + new ExpressionDeParser() { |
| 121 | + @Override |
| 122 | + public <S> StringBuilder visit(Column column, |
| 123 | + S context) { |
| 124 | + getBuilder().append("renamed_id"); |
| 125 | + return getBuilder(); |
| 126 | + } |
| 127 | + }; |
| 128 | + visitor.setBuilder(builder); |
| 129 | + new TableElementDeParser(builder, visitor).deParse(check); |
| 130 | + assertEquals("CONSTRAINT CHECK (renamed_id > 0) CONSTRAINT positive_id", |
| 131 | + builder.toString()); |
| 132 | + assertEquals(Set.of("child", "parent"), |
| 133 | + TablesNamesFinder.findTables( |
| 134 | + "ALTER TABLE child ADD CONSTRAINT FOREIGN KEY (id) REFERENCES parent(id) CONSTRAINT fk")); |
| 135 | + } |
| 136 | + |
| 137 | + @Test |
| 138 | + void rejectsMissingOrDuplicateNames() { |
| 139 | + for (String sql : List.of( |
| 140 | + "ALTER TABLE t ADD CONSTRAINT PRIMARY KEY (id) CONSTRAINT", |
| 141 | + "ALTER TABLE t ADD CONSTRAINT UNIQUE (id) CONSTRAINT a CONSTRAINT b", |
| 142 | + "ALTER TABLE t ADD CONSTRAINT FOREIGN KEY (id) CONSTRAINT fk", |
| 143 | + "ALTER TABLE t MODIFY CONSTRAINT UNIQUE (id) CONSTRAINT uk")) { |
| 144 | + assertThrows(JSQLParserException.class, () -> CCJSqlParserUtil.parse(sql)); |
| 145 | + } |
| 146 | + } |
| 147 | +} |
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