JPQLSelectContextView (olingo-odata2-jpa-processor-api 3.0.0-SP.28 API)

All Superinterfaces:

JPQLContextView

All Known Subinterfaces:

JPQLJoinContextView
```
public interface JPQLSelectContextView
extends JPQLContextView
```
The interface provide a view on JPQL select context.The interface provides methods for accessing the clauses of a JPQL SELECT statement like "SELECT", "ORDERBY", "WHERE". The clauses are built from OData read entity set request views. The clauses thus built can be used for building JPQL Statements.

See Also:

JPQLStatement

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`String`	`getOrderByCollection()`	The method returns an JPQL ORDERBY clause.
`String`	`getSelectExpression()`	The method returns a JPQL SELECT clause.
`String`	`getWhereExpression()`	The method returns a JPQL WHERE condition as string.

Methods inherited from interface org.apache.olingo.odata2.jpa.processor.api.jpql.JPQLContextView
getJPAEntityAlias, getJPAEntityName, getType

- Method Detail
  - getSelectExpression
```
String getSelectExpression()
```
    The method returns a JPQL SELECT clause. The SELECT clause is built from $select OData system Query option.
    
    Returns:
    
    a String representing a SELECT clause in JPQL
  - getOrderByCollection
```
String getOrderByCollection()
```
    The method returns an JPQL ORDERBY clause. The ORDERBY clause is built from $orderby OData system query option. The hash map contains
    
    Key - JPA Entity Property name to be ordered
    
    Value - Sort Order in JPQL (desc,asc)
    
    in the order based on the expression specified (accessible with Map.entrySet(..)). https://issues.apache.org/jira/browse/OLINGO-606
    Returns:
    
    an ordered map of (JPA Property Name,Sort Order)
  - getWhereExpression
```
String getWhereExpression()
```
    The method returns a JPQL WHERE condition as string. The WHERE condition can be built from $filter OData System Query Option and/or Key predicates of an OData Request.
    
    Returns:
    
    a String representing a WHERE condition in JPQL