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HHH-3192 - SchemaValidator nullability check #11420

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Merged
sebersole merged 1 commit into from
Dec 12, 2025
+17 −0
Merged

HHH-3192 - SchemaValidator nullability check #11420

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17 changes: 17 additions & 0 deletions hibernate-core/src/main/java/org/hibernate/tool/schema/internal/AbstractSchemaValidator.java
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Original file line number Diff line number Diff line change
Expand Up @@ -139,6 +139,7 @@ protected void validateTable(
);
}
validateColumnType( table, column, existingColumn, metadata, dialect );
validateColumnNullability( table, column, existingColumn );
}
}

Expand All @@ -164,6 +165,22 @@ protected void validateColumnType(
}
}

private void validateColumnNullability(Table table, Column column, ColumnInformation existingColumn) {
if ( existingColumn.getNullable() == Boolean.FALSE ) {
// the existing schema column is defined as not-nullable
if ( column.isNullable() ) {
// but it is mapped in the model as nullable
throw new SchemaManagementException(
String.format(
"Schema validation: column defined as not-null in the database, but nullable in model - [%s] in table [%s]",
column.getName(),
table.getQualifiedTableName()
)
);
}
}
}

protected void validateSequence(Sequence sequence, SequenceInformation sequenceInformation) {
if ( sequenceInformation == null ) {
throw new SchemaManagementException(
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