HHH-16535 introduce @Array annotation

hibernate-community-dialects/src/main/java/org/hibernate/community/dialect/OracleLegacyDialect.java

@@ -746,7 +746,7 @@ public class OracleLegacyDialect extends Dialect {
 	}
 
 	@Override
-	public String getArrayTypeName(String javaElementTypeName, String elementTypeName) {
+	public String getArrayTypeName(String javaElementTypeName, String elementTypeName, Integer maxLength) {
 		return javaElementTypeName + "Array";
 	}
 

hibernate-core/src/main/java/org/hibernate/annotations/Array.java

@@ -0,0 +1,30 @@
+/*
+ * Hibernate, Relational Persistence for Idiomatic Java
+ *
+ * License: GNU Lesser General Public License (LGPL), version 2.1 or later.
+ * See the lgpl.txt file in the root directory or <http://www.gnu.org/licenses/lgpl-2.1.html>.
+ */
+package org.hibernate.annotations;
+
+import org.hibernate.Incubating;
+
+import java.lang.annotation.Retention;
+import java.lang.annotation.Target;
+
+import static java.lang.annotation.ElementType.FIELD;
+import static java.lang.annotation.ElementType.METHOD;
+import static java.lang.annotation.RetentionPolicy.RUNTIME;
+
+/**
+ * Specifies the maximum length of a SQL array type mapped by
+ * the annotated attribute. For example:
+ * <pre>
+ *
+ * </pre>
+ */
+@Incubating
+@Target({FIELD, METHOD})
+@Retention( RUNTIME )
+public @interface Array {
+	int length();
+}

hibernate-core/src/main/java/org/hibernate/annotations/Struct.java

@@ -7,7 +7,6 @@
 package org.hibernate.annotations;
 
 import java.lang.annotation.Retention;
-import java.lang.annotation.RetentionPolicy;
 import java.lang.annotation.Target;
 
 import org.hibernate.Incubating;
@@ -15,33 +14,32 @@ import org.hibernate.Incubating;
 import static java.lang.annotation.ElementType.FIELD;
 import static java.lang.annotation.ElementType.METHOD;
 import static java.lang.annotation.ElementType.TYPE;
+import static java.lang.annotation.RetentionPolicy.RUNTIME;
 
 /**
- * Specifies the UDT (user defined type) name for the annotated embeddable or embedded.
- *
+ * Specifies the UDT (user defined type) name for the annotated embeddable
+ * type or embedded attribute.
+ * <p>
+ * This annotation may be applied to an embeddable class:
  * <pre>
- *    Example:
- *
- *    {@code @Embeddable}
- *    {@code Struct(name = "CUST")}
- *    public class Customer { ... }
+ * {@code @Embeddable}
+ * {@code Struct(name = "CUST")}
+ * public class Customer { ... }
  * </pre>
- *
+ * Alternatively, it may be applied to an embedded attribute:
  * <pre>
- *    Example:
- *
- *    public class Order {
- *        {@code Embedded}
- *        {@code Struct(name = "CUST")}
- *        private Customer customer;
- *    }
+ * public class Order {
+ *     {@code Embedded}
+ *     {@code Struct(name = "CUST")}
+ *     private Customer customer;
+ * }
  * </pre>
  *
  * @since 6.2
  */
 @Incubating
 @Target({TYPE, FIELD, METHOD})
-@Retention( RetentionPolicy.RUNTIME )
+@Retention( RUNTIME )
 public @interface Struct {
 	/**
 	 * The name of the UDT (user defined type).

hibernate-core/src/main/java/org/hibernate/boot/model/internal/AnnotatedColumn.java

@@ -11,6 +11,7 @@ import java.util.List;
 import java.util.Map;
 
 import org.hibernate.AnnotationException;
+import org.hibernate.annotations.Array;
 import org.hibernate.annotations.Check;
 import org.hibernate.annotations.Checks;
 import org.hibernate.annotations.ColumnDefault;
@@ -75,6 +76,7 @@ public class AnnotatedColumn {
 	private Long length;
 	private Integer precision;
 	private Integer scale;
+	private Integer arrayLength;
 	private String logicalColumnName;
 	private boolean unique;
 	private boolean nullable = true;
@@ -120,6 +122,14 @@ public class AnnotatedColumn {
 		return scale;
 	}
 
+	public Integer getArrayLength() {
+		return arrayLength;
+	}
+
+	public void setArrayLength(Integer arrayLength) {
+		this.arrayLength = arrayLength;
+	}
+
 	public boolean isUnique() {
 		return unique;
 	}
@@ -228,6 +238,7 @@ public class AnnotatedColumn {
 					length,
 					precision,
 					scale,
+					arrayLength,
 					nullable,
 					sqlType,
 					unique,
@@ -257,6 +268,7 @@ public class AnnotatedColumn {
 			Long length,
 			Integer precision,
 			Integer scale,
+			Integer arrayLength,
 			boolean nullable,
 			String sqlType,
 			boolean unique,
@@ -273,6 +285,7 @@ public class AnnotatedColumn {
 				mappingColumn.setPrecision( precision );
 				mappingColumn.setScale( scale );
 			}
+			mappingColumn.setArrayLength( arrayLength );
 			mappingColumn.setNullable( nullable );
 			mappingColumn.setSqlType( sqlType );
 			mappingColumn.setUnique( unique );
@@ -732,6 +745,9 @@ public class AnnotatedColumn {
 		annotatedColumn.setLength( (long) column.length() );
 		annotatedColumn.setPrecision( column.precision() );
 		annotatedColumn.setScale( column.scale() );
+		if ( inferredData.getProperty().isAnnotationPresent(Array.class) ) {
+			annotatedColumn.setArrayLength( inferredData.getProperty().getAnnotation(Array.class).length() );
+		}
 //		annotatedColumn.setPropertyHolder( propertyHolder );
 //		annotatedColumn.setPropertyName( getRelativePath( propertyHolder, inferredData.getPropertyName() ) );
 		annotatedColumn.setNullable( column.nullable() ); //TODO force to not null if available? This is a (bad) user choice.

hibernate-core/src/main/java/org/hibernate/boot/model/internal/AnnotatedJoinColumn.java

@@ -311,9 +311,11 @@ public class AnnotatedJoinColumn extends AnnotatedColumn {
 		final Column mappingColumn = getMappingColumn();
 		initMappingColumn(
 				columnName,
-				null, referencedColumn.getLength(),
+				null,
+				referencedColumn.getLength(),
 				referencedColumn.getPrecision(),
 				referencedColumn.getScale(),
+				referencedColumn.getArrayLength(),
 				mappingColumn != null && mappingColumn.isNullable(),
 				referencedColumn.getSqlType(),
 				mappingColumn != null && mappingColumn.isUnique(),
@@ -339,6 +341,7 @@ public class AnnotatedJoinColumn extends AnnotatedColumn {
 				column.getLength(),
 				column.getPrecision(),
 				column.getScale(),
+				column.getArrayLength(),
 				getMappingColumn().isNullable(),
 				column.getSqlType(),
 				getMappingColumn().isUnique(),
@@ -390,6 +393,7 @@ public class AnnotatedJoinColumn extends AnnotatedColumn {
 			mappingColumn.setLength( column.getLength() );
 			mappingColumn.setPrecision( column.getPrecision() );
 			mappingColumn.setScale( column.getScale() );
+			mappingColumn.setArrayLength( column.getArrayLength() );
 		}
 	}
 

hibernate-core/src/main/java/org/hibernate/boot/model/internal/CopyIdentifierComponentSecondPass.java

@@ -247,5 +247,6 @@ public class CopyIdentifierComponentSecondPass extends FkSecondPass {
 		mappingColumn.setLength( column.getLength() );
 		mappingColumn.setPrecision( column.getPrecision() );
 		mappingColumn.setScale( column.getScale() );
+		mappingColumn.setArrayLength( column.getArrayLength() );
 	}
 }

hibernate-core/src/main/java/org/hibernate/dialect/Dialect.java

@@ -4192,8 +4192,15 @@ public abstract class Dialect implements ConversionContext, TypeContributor, Fun
 	 *
 	 * @since 6.1
 	 */
-	public String getArrayTypeName(String javaElementTypeName, String elementTypeName) {
-		return supportsStandardArrays() ? elementTypeName + " array" : null;
+	public String getArrayTypeName(String javaElementTypeName, String elementTypeName, Integer maxLength) {
+		if ( supportsStandardArrays() ) {
+			return maxLength == null
+					? elementTypeName + " array"
+					: elementTypeName + " array[" + maxLength + "]";
+		}
+		else {
+			return null;
+		}
 	}
 
 	/**

hibernate-core/src/main/java/org/hibernate/dialect/DialectDelegateWrapper.java

@@ -1295,8 +1295,8 @@ public class DialectDelegateWrapper extends Dialect {
 	}
 
 	@Override
-	public String getArrayTypeName(String javaElementTypeName, String elementTypeName) {
-		return wrapped.getArrayTypeName( javaElementTypeName, elementTypeName );
+	public String getArrayTypeName(String javaElementTypeName, String elementTypeName, Integer maxLength) {
+		return wrapped.getArrayTypeName( javaElementTypeName, elementTypeName, maxLength );
 	}
 
 	@Override

hibernate-core/src/main/java/org/hibernate/dialect/OracleArrayJdbcType.java

@@ -66,11 +66,8 @@ public class OracleArrayJdbcType implements JdbcType {
 			Integer precision,
 			Integer scale,
 			TypeConfiguration typeConfiguration) {
-		final JavaType<Object> elementJavaType = elementJdbcType.getJdbcRecommendedJavaTypeMapping(
-				precision,
-				scale,
-				typeConfiguration
-		);
+		final JavaType<Object> elementJavaType =
+				elementJdbcType.getJdbcRecommendedJavaTypeMapping( precision, scale, typeConfiguration );
 		return typeConfiguration.getJavaTypeRegistry().resolveDescriptor(
 				Array.newInstance( elementJavaType.getJavaTypeClass(), 0 ).getClass()
 		);
@@ -173,6 +170,7 @@ public class OracleArrayJdbcType implements JdbcType {
 	static String getTypeName(JavaType<?> elementJavaType, Dialect dialect) {
 		return dialect.getArrayTypeName(
 				elementJavaType.getJavaTypeClass().getSimpleName(),
+				null, // not needed by OracleDialect.getArrayTypeName()
 				null // not needed by OracleDialect.getArrayTypeName()
 		);
 	}
@@ -199,11 +197,12 @@ public class OracleArrayJdbcType implements JdbcType {
 						),
 						new BasicTypeImpl<>( elementJavaType, getElementJdbcType() )
 				);
+		int arrayLength = columnSize.getArrayLength() == null ? 127 : columnSize.getArrayLength();
 		database.addAuxiliaryDatabaseObject(
 				new NamedAuxiliaryDatabaseObject(
 						elementTypeName,
 						database.getDefaultNamespace(),
-						getCreateArrayTypeCommand( elementTypeName, elementType ),
+						getCreateArrayTypeCommand( elementTypeName, arrayLength, elementType ),
 						getDropArrayTypeCommand( elementTypeName ),
 						emptySet(),
 						true
@@ -211,10 +210,10 @@ public class OracleArrayJdbcType implements JdbcType {
 		);
 	}
 
-	String[] getCreateArrayTypeCommand(String elementTypeName, String elementType) {
+	String[] getCreateArrayTypeCommand(String elementTypeName, int length, String elementType) {
 		return new String[]{
 				"create or replace type " + elementTypeName
-						+ " as varying array(255) of " + elementType
+						+ " as varying array(" + length + ") of " + elementType
 		};
 	}
 

hibernate-core/src/main/java/org/hibernate/dialect/OracleDialect.java

@@ -785,7 +785,7 @@ public class OracleDialect extends Dialect {
 	}
 
 	@Override
-	public String getArrayTypeName(String javaElementTypeName, String elementTypeName) {
+	public String getArrayTypeName(String javaElementTypeName, String elementTypeName, Integer maxLength) {
 		return javaElementTypeName + "Array";
 	}
 

hibernate-core/src/main/java/org/hibernate/dialect/SpannerDialect.java

@@ -188,7 +188,7 @@ public class SpannerDialect extends Dialect {
 	}
 
 	@Override
-	public String getArrayTypeName(String javaElementTypeName, String elementTypeName) {
+	public String getArrayTypeName(String javaElementTypeName, String elementTypeName, Integer maxLength) {
 		return "ARRAY<" + elementTypeName + ">";
 	}
 

hibernate-core/src/main/java/org/hibernate/engine/jdbc/Size.java

@@ -47,6 +47,7 @@ public class Size implements Serializable {
 	private Integer scale;
 
 	private Long length;
+	private Integer arrayLength;
 	private LobMultiplier lobMultiplier;
 
 	public Size() {
@@ -106,6 +107,10 @@ public class Size implements Serializable {
 		return length;
 	}
 
+	public Integer getArrayLength() {
+		return arrayLength;
+	}
+
 	public LobMultiplier getLobMultiplier() {
 		return lobMultiplier;
 	}
@@ -131,6 +136,11 @@ public class Size implements Serializable {
 		return this;
 	}
 
+	public Size setArrayLength(Integer arrayLength) {
+		this.arrayLength = arrayLength;
+		return this;
+	}
+
 	public Size setLobMultiplier(LobMultiplier lobMultiplier) {
 		this.lobMultiplier = lobMultiplier;
 		return this;

hibernate-core/src/main/java/org/hibernate/mapping/AggregateColumn.java

@@ -23,6 +23,7 @@ public class AggregateColumn extends Column {
 		setLength( column.getLength() );
 		setPrecision( column.getPrecision() );
 		setScale( column.getScale() );
+		setArrayLength( column.getArrayLength() );
 		setValue( column.getValue() );
 		setTypeIndex( column.getTypeIndex() );
 		setName( column.getQuotedName() );

hibernate-core/src/main/java/org/hibernate/mapping/Column.java

@@ -48,6 +48,7 @@ public class Column implements Selectable, Serializable, Cloneable, ColumnTypeIn
 	private Long length;
 	private Integer precision;
 	private Integer scale;
+	private Integer arrayLength;
 	private Value value;
 	private int typeIndex;
 	private String name;
@@ -86,6 +87,14 @@ public class Column implements Selectable, Serializable, Cloneable, ColumnTypeIn
 		this.length = length.longValue();
 	}
 
+	public Integer getArrayLength() {
+		return arrayLength;
+	}
+
+	public void setArrayLength(Integer arrayLength) {
+		this.arrayLength = arrayLength;
+	}
+
 	public Value getValue() {
 		return value;
 	}
@@ -392,13 +401,15 @@ public class Column implements Selectable, Serializable, Cloneable, ColumnTypeIn
 			throw new AssertionFailure( "no typing information available to determine column size" );
 		}
 		final JdbcMapping jdbcMapping = (JdbcMapping) type;
-		return dialect.getSizeStrategy().resolveSize(
+		Size size = dialect.getSizeStrategy().resolveSize(
 				jdbcMapping.getJdbcType(),
 				jdbcMapping.getJdbcJavaType(),
 				precision,
 				scale,
 				length
 		);
+		size.setArrayLength( arrayLength );
+		return size;
 	}
 
 	private Type getTypeForComponentValue(Mapping mapping, Type type, int typeIndex) {
@@ -675,6 +686,7 @@ public class Column implements Selectable, Serializable, Cloneable, ColumnTypeIn
 		copy.length = length;
 		copy.precision = precision;
 		copy.scale = scale;
+		copy.arrayLength = arrayLength;
 		copy.value = value;
 		copy.typeIndex = typeIndex;
 		copy.name = name;

hibernate-core/src/main/java/org/hibernate/mapping/ForeignKey.java

@@ -141,6 +141,7 @@ public class ForeignKey extends Constraint {
 				referencingColumn.setLength( referencedColumn.getLength() );
 				referencingColumn.setScale( referencedColumn.getScale() );
 				referencingColumn.setPrecision( referencedColumn.getPrecision() );
+				referencingColumn.setArrayLength( referencedColumn.getArrayLength() );
 			}
 		}
 	}

hibernate-core/src/main/java/org/hibernate/sql/ast/spi/AbstractSqlAstTranslator.java

@@ -6130,7 +6130,8 @@ public abstract class AbstractSqlAstTranslator<T extends JdbcOperation> implemen
 						);
 				final String arrayTypeName = dialect.getArrayTypeName(
 						javaTypeDescriptor.getElementJavaType().getJavaTypeClass().getSimpleName(),
-						elementTypeName
+						elementTypeName,
+						null
 				);
 				if ( arrayTypeName != null ) {
 					appendSql( arrayTypeName );

hibernate-core/src/main/java/org/hibernate/type/descriptor/sql/internal/ArrayDdlTypeImpl.java

@@ -44,7 +44,8 @@ public class ArrayDdlTypeImpl extends DdlTypeImpl {
 				);
 		return dialect.getArrayTypeName(
 				javaTypeDescriptor.getElementJavaType().getJavaTypeClass().getSimpleName(),
-				arrayElementTypeName
+				arrayElementTypeName,
+				columnSize.getArrayLength()
 		);
 	}