QueryExpressions (OpenJPA Parent POM 3.1.2 API)

java.lang.Object
- org.apache.openjpa.kernel.exps.QueryExpressions

All Implemented Interfaces:

Serializable
```
public class QueryExpressions
extends Object
implements Serializable
```
Struct to hold the state of a parsed expression query.

Since:

0.3.2

Author:

Abe White

See Also:

Serialized Form

Field Summary

Fields
Modifier and Type	Field and Description
`ClassMetaData[]`	`accessPath`
`String`	`alias`
`boolean[]`	`ascending`
`int`	`distinct`
`static int`	`DISTINCT_AUTO`
`static int`	`DISTINCT_FALSE`
`static int`	`DISTINCT_TRUE`
`static Value[]`	`EMPTY_VALUES`
`String[]`	`fetchInnerPaths`
`String[]`	`fetchPaths`
`Expression`	`filter`
`Value[]`	`grouping`
`String[]`	`groupingClauses`
`boolean`	`hasInExpression`
`Expression`	`having`
`int`	`operation`
`Value[]`	`ordering`
`String[]`	`orderingAliases`
`String[]`	`orderingClauses`
`OrderedMap<Object,Class<?>>`	`parameterTypes`
`String[]`	`projectionAliases`
`String[]`	`projectionClauses`
`Value[]`	`projections`
`Value[]`	`range`
`Class<?>`	`resultClass`
`ResultShape<?>`	`shape`
`Object`	`state`
`Map<Path,Value>`	`updates` Map of `FieldMetaData`,`Value` for update statements.

Constructor Summary

Constructors
Constructor and Description

QueryExpressions()

Constructors
Constructor and Description
`QueryExpressions()`

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`Context`	`ctx()` Returns the current JPQL query context.
`List<FieldMetaData>`	`getParameterizedFields()` Gets the fields that are bound to parameters.
`boolean`	`isAggregate()` Whether this is an aggregate results.
`boolean`	`isDistinct()`
`void`	`putUpdate(Path path, Value val)` Add an update.
`void`	`setContexts(Stack<Context> contexts)` Set reference to the JPQL query contexts.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

DISTINCT_AUTO
```
public static final int DISTINCT_AUTO
```
See Also:

Constant Field Values

DISTINCT_TRUE
```
public static final int DISTINCT_TRUE
```
See Also:

Constant Field Values

DISTINCT_FALSE
```
public static final int DISTINCT_FALSE
```
See Also:

Constant Field Values

EMPTY_VALUES

public static final Value[] EMPTY_VALUES

updates
```
public Map<Path,Value> updates
```
Map of FieldMetaData,Value for update statements.

distinct
```
public int distinct
```

alias
```
public String alias
```

projections
```
public Value[] projections
```

projectionClauses
```
public String[] projectionClauses
```

projectionAliases
```
public String[] projectionAliases
```

resultClass
```
public Class<?> resultClass
```

filter
```
public Expression filter
```

grouping
```
public Value[] grouping
```

groupingClauses
```
public String[] groupingClauses
```

having
```
public Expression having
```

ordering
```
public Value[] ordering
```

ascending
```
public boolean[] ascending
```

orderingClauses
```
public String[] orderingClauses
```

orderingAliases
```
public String[] orderingAliases
```

parameterTypes

public OrderedMap<Object,Class<?>> parameterTypes

operation
```
public int operation
```

accessPath
```
public ClassMetaData[] accessPath
```

fetchPaths
```
public String[] fetchPaths
```

fetchInnerPaths
```
public String[] fetchInnerPaths
```

range
```
public Value[] range
```

state
```
public Object state
```

shape
```
public ResultShape<?> shape
```

hasInExpression
```
public boolean hasInExpression
```

Constructor Detail
- QueryExpressions
```
public QueryExpressions()
```

Method Detail
- setContexts
```
public void setContexts(Stack<Context> contexts)
```
  Set reference to the JPQL query contexts.
- ctx
```
public Context ctx()
```
  Returns the current JPQL query context.
- isAggregate
```
public boolean isAggregate()
```
  Whether this is an aggregate results.
- isDistinct
```
public boolean isDistinct()
```
- getParameterizedFields
```
public List<FieldMetaData> getParameterizedFields()
```
  Gets the fields that are bound to parameters.
  
  Returns:
  
  empty if the query has no filtering condition or no parameters.
- putUpdate
```
public void putUpdate(Path path,
                      Value val)
```
  Add an update.

Class QueryExpressions

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

DISTINCT_AUTO

DISTINCT_TRUE

DISTINCT_FALSE

EMPTY_VALUES

updates

distinct

alias

projections

projectionClauses

projectionAliases

resultClass

filter

grouping

groupingClauses

having

ordering

ascending

orderingClauses

orderingAliases

parameterTypes

operation

accessPath

fetchPaths

fetchInnerPaths

range

state

shape

hasInExpression

Constructor Detail

QueryExpressions

Method Detail

setContexts

ctx

isAggregate

isDistinct

getParameterizedFields

putUpdate