com.haulmont.cuba.core.app

Interface JpqlSortExpressionProvider

All Known Implementing Classes:

DefaultJpqlSortExpressionProvider, TestJpqlSortExpressionProvider

public interface JpqlSortExpressionProvider

Interface to be implemented by a Spring bean that generates JPQL sort expression for datatype and LOB attributes.

Override the bean to provide custom sort logic, e.g. to use JPQL functions.

Field Summary

Fields

Modifier and Type	Field and Description
static java.lang.String	NAME

Method Summary

Modifier and Type	Method and Description
java.lang.String	getDatatypeSortExpression(MetaPropertyPath metaPropertyPath, boolean sortDirectionAsc) Returns JPQL "order by" expression for the specified attribute, e.g.
java.lang.String	getLobSortExpression(MetaPropertyPath metaPropertyPath, boolean sortDirectionAsc) Returns JPQL "order by" expression for the specified LOB attribute.

Field Detail

NAME

static final java.lang.String NAME

See Also:

Constant Field Values

Method Detail

getDatatypeSortExpression

java.lang.String getDatatypeSortExpression(MetaPropertyPath metaPropertyPath,
                                           boolean sortDirectionAsc)

Returns JPQL "order by" expression for the specified attribute, e.g. {E}.property, where {E} is a placeholder for entity alias. It's possible to:

• Apply JPQL functions for property, e.g
  upper({E}.property)
• Use asc/desc or nulls last/nulls first, e.g.
  {E}.property asc nulls first

getLobSortExpression

java.lang.String getLobSortExpression(MetaPropertyPath metaPropertyPath,
                                      boolean sortDirectionAsc)

Returns JPQL "order by" expression for the specified LOB attribute.

See Also:

getDatatypeSortExpression(MetaPropertyPath, boolean)