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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.statement.create; |
| 11 | + |
| 12 | +import static org.junit.jupiter.api.Assertions.*; |
| 13 | +import java.util.List; |
| 14 | +import net.sf.jsqlparser.JSQLParserException; |
| 15 | +import net.sf.jsqlparser.parser.CCJSqlParserUtil; |
| 16 | +import net.sf.jsqlparser.parser.AbstractJSqlParser.Dialect; |
| 17 | +import net.sf.jsqlparser.statement.Statement; |
| 18 | +import net.sf.jsqlparser.statement.alter.Alter; |
| 19 | +import net.sf.jsqlparser.statement.create.table.*; |
| 20 | +import net.sf.jsqlparser.util.deparser.StatementDeParser; |
| 21 | +import org.junit.jupiter.api.Test; |
| 22 | +import org.junit.jupiter.params.ParameterizedTest; |
| 23 | +import org.junit.jupiter.params.provider.ValueSource; |
| 24 | + |
| 25 | +class PostgreSqlConstraintEnforcementTest { |
| 26 | + @ParameterizedTest |
| 27 | + @ValueSource(strings = {"ENFORCED", "NOT ENFORCED", |
| 28 | + "DEFERRABLE INITIALLY DEFERRED NOT ENFORCED", |
| 29 | + "NOT ENFORCED DEFERRABLE INITIALLY DEFERRED", |
| 30 | + "INITIALLY IMMEDIATE NOT DEFERRABLE ENFORCED"}) |
| 31 | + void sharesForeignKeyAttributesAcrossCreateAndAlter(String attributes) |
| 32 | + throws JSQLParserException { |
| 33 | + for (String prefix : List.of("CREATE TABLE t (id INT, ", "ALTER TABLE t ADD ")) { |
| 34 | + Statement statement = |
| 35 | + parse(prefix + "CONSTRAINT fk FOREIGN KEY (id) REFERENCES public.p (id) " |
| 36 | + + "MATCH SIMPLE ON DELETE CASCADE " + attributes |
| 37 | + + (prefix.startsWith("CREATE") ? ")" : ", ADD COLUMN extra INT")); |
| 38 | + ForeignKeyIndex fk = (ForeignKeyIndex) (statement instanceof CreateTable |
| 39 | + ? ((CreateTable) statement).getIndexes().get(0) |
| 40 | + : ((Alter) statement).getAlterExpressions().get(0).getIndex()); |
| 41 | + assertEquals(!attributes.contains("NOT ENFORCED"), |
| 42 | + fk.getConstraintAttributes().getEnforced()); |
| 43 | + roundTrip(statement); |
| 44 | + fk.getConstraintAttributes().setEnforced(true); |
| 45 | + roundTrip(statement); |
| 46 | + assertFalse(statement.toString().contains("NOT ENFORCED")); |
| 47 | + fk.getConstraintAttributes().setEnforced(null); |
| 48 | + roundTrip(statement); |
| 49 | + assertFalse(statement.toString().contains("ENFORCED")); |
| 50 | + } |
| 51 | + } |
| 52 | + |
| 53 | + @ParameterizedTest |
| 54 | + @ValueSource(strings = {"ENFORCED", "NOT ENFORCED DEFERRABLE INITIALLY DEFERRED"}) |
| 55 | + void columnReferencesRetainTheirOwnAttributesAndFollowingOptions(String attributes) |
| 56 | + throws JSQLParserException { |
| 57 | + for (String prefix : List.of("CREATE TABLE t (", "ALTER TABLE t ADD COLUMN ")) { |
| 58 | + Statement statement = parse(prefix + "id INT REFERENCES public.p (id) " + attributes |
| 59 | + + " NOT NULL" |
| 60 | + + (prefix.startsWith("CREATE") ? ", value INT)" : ", ADD COLUMN value INT")); |
| 61 | + ColumnDefinition column = statement instanceof CreateTable |
| 62 | + ? ((CreateTable) statement).getColumnDefinitions().get(0) |
| 63 | + : ((Alter) statement).getAlterExpressions().get(0).getColDataTypeList().get(0); |
| 64 | + ForeignKeyReference reference = |
| 65 | + column.getColumnOptions().get(0).getForeignKeyReference(); |
| 66 | + assertNotNull(reference.getConstraintAttributes()); |
| 67 | + assertEquals(!attributes.contains("NOT ENFORCED"), |
| 68 | + reference.getConstraintAttributes().getEnforced()); |
| 69 | + assertEquals(ColumnOption.Kind.NULLABILITY, column.getColumnOptions().get(1).getKind()); |
| 70 | + roundTrip(statement); |
| 71 | + reference.getConstraintAttributes().setEnforced(null); |
| 72 | + roundTrip(statement); |
| 73 | + } |
| 74 | + } |
| 75 | + |
| 76 | + @Test |
| 77 | + void checkLegacyAccessorsUseTheSharedAttributeState() throws JSQLParserException { |
| 78 | + for (String prefix : List.of("CREATE TABLE t (id INT, ", "ALTER TABLE t ADD ")) { |
| 79 | + Statement statement = parse(prefix + "CHECK (id > 0) NOT ENFORCED" |
| 80 | + + (prefix.startsWith("CREATE") ? ")" : " NOT VALID")); |
| 81 | + CheckConstraint check = (CheckConstraint) (statement instanceof CreateTable |
| 82 | + ? ((CreateTable) statement).getIndexes().get(0) |
| 83 | + : ((Alter) statement).getAlterExpressions().get(0).getIndex()); |
| 84 | + assertEquals(false, check.getConstraintAttributes().getEnforced()); |
| 85 | + check.getConstraintAttributes().setEnforced(true); |
| 86 | + assertEquals(true, check.getEnforced()); |
| 87 | + check.setEnforced(false); |
| 88 | + assertEquals(false, check.getConstraintAttributes().getEnforced()); |
| 89 | + roundTrip(statement); |
| 90 | + check.setEnforced(null); |
| 91 | + assertNull(check.getEnforced()); |
| 92 | + roundTrip(statement); |
| 93 | + } |
| 94 | + assertNull(new CheckConstraint().withEnforced(null).getConstraintAttributes()); |
| 95 | + } |
| 96 | + |
| 97 | + @Test |
| 98 | + void preservesAlterEnforcementAndStatementBoundaries() throws JSQLParserException { |
| 99 | + for (String flag : List.of("ENFORCED", "NOT ENFORCED")) { |
| 100 | + Alter alter = (Alter) parse("ALTER TABLE t ALTER CONSTRAINT fk " + flag); |
| 101 | + assertEquals(!flag.startsWith("NOT"), alter.getAlterExpressions().get(0).isEnforced()); |
| 102 | + roundTrip(alter); |
| 103 | + } |
| 104 | + assertEquals(2, CCJSqlParserUtil.parseStatements( |
| 105 | + "CREATE TABLE t(id INT REFERENCES p NOT ENFORCED); SELECT 1").size()); |
| 106 | + } |
| 107 | + |
| 108 | + @ParameterizedTest |
| 109 | + @ValueSource(strings = {"FOREIGN KEY(id) REFERENCES p ENFORCED NOT ENFORCED", |
| 110 | + "FOREIGN KEY(id) REFERENCES p DEFERRABLE NOT DEFERRABLE", |
| 111 | + "FOREIGN KEY(id) REFERENCES p ENFORCED INITIALLY wrong", |
| 112 | + "PRIMARY KEY(id) NOT ENFORCED", "CHECK(id > 0) ENFORCED ENFORCED"}) |
| 113 | + void rejectsMalformedAttributeTails(String constraint) { |
| 114 | + assertThrows(JSQLParserException.class, |
| 115 | + () -> parse("CREATE TABLE t(id INT, " + constraint + ")")); |
| 116 | + } |
| 117 | + |
| 118 | + @ParameterizedTest |
| 119 | + @ValueSource(strings = {"CREATE TABLE t(id INT REFERENCES p ENFORCED NOT VALID)", |
| 120 | + "ALTER TABLE t ADD COLUMN id INT REFERENCES p NOT VALID"}) |
| 121 | + void rejectsNotValidOnColumnReferences(String sql) { |
| 122 | + assertThrows(JSQLParserException.class, () -> parse(sql)); |
| 123 | + } |
| 124 | + |
| 125 | + private static Statement parse(String sql) throws JSQLParserException { |
| 126 | + return CCJSqlParserUtil.parse(sql, p -> p.withDialect(Dialect.POSTGRESQL)); |
| 127 | + } |
| 128 | + |
| 129 | + private static void roundTrip(Statement statement) throws JSQLParserException { |
| 130 | + StringBuilder out = new StringBuilder(); |
| 131 | + statement.accept(new StatementDeParser(out)); |
| 132 | + assertEquals(statement.toString(), out.toString()); |
| 133 | + assertEquals(out.toString(), parse(out.toString()).toString()); |
| 134 | + } |
| 135 | +} |
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