PrimaryExpression (DataNucleus Core 6.0.0-m4-SNAPSHOT API)

java.lang.Object
- org.datanucleus.store.query.expression.Expression
- - org.datanucleus.store.query.expression.PrimaryExpression

All Implemented Interfaces:

Serializable
```
public class PrimaryExpression
extends Expression
```
Expression for a primary object. This may be a field, or an explicit variable/parameter, or a field invoked on an expression.

See Also:

Serialized Form

Nested Class Summary
- Nested classes/interfaces inherited from class org.datanucleus.store.query.expression.Expression
  Expression.DyadicOperator, Expression.MonadicOperator, Expression.Operator

Field Summary
- Fields inherited from class org.datanucleus.store.query.expression.Expression
  alias, left, op, OP_ADD, OP_AND, OP_BIT_AND, OP_BIT_OR, OP_BIT_XOR, OP_CAST, OP_COM, OP_CONCAT, OP_DISTINCT, OP_DIV, OP_EQ, OP_GT, OP_GTEQ, OP_IN, OP_IS, OP_ISNOT, OP_LIKE, OP_LT, OP_LTEQ, OP_MOD, OP_MUL, OP_NEG, OP_NOT, OP_NOTEQ, OP_NOTIN, OP_OR, OP_SUB, parent, right, symbol

Constructor Summary

Constructors
Constructor	Description
`PrimaryExpression(List<String> tuples)`	PrimaryExpression made up of a series of field names.
`PrimaryExpression(Expression left, List<String> tuples)`	PrimaryExpression on an expression.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`Symbol`	`bind(SymbolTable symtbl)`	Method to bind the expression to the symbol table as appropriate.
`String`	`getId()`	Accessor for the expression "id".
`List<String>`	`getTuples()`
`String`	`toString()`	Accessor for string form of the expression.

Methods inherited from class org.datanucleus.store.query.expression.Expression
evaluate, getAlias, getLeft, getOperator, getParent, getRight, getSymbol, setAlias, setLeft, setRight

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

- Constructor Detail
  - PrimaryExpression
```
public PrimaryExpression(List<String> tuples)
```
    PrimaryExpression made up of a series of field names. e.g "a.b.c"
    
    Parameters:
    
    tuples - The components of the expression
  - PrimaryExpression
```
public PrimaryExpression(Expression left,
                         List<String> tuples)
```
    PrimaryExpression on an expression. e.g "((B)a).c" so the left expression is a CastExpression, and the tuples are "c".
    
    Parameters:
    
    left - The left expression
    
    tuples - The tuples of the primary
- Method Detail
  - getId
```
public String getId()
```
    Accessor for the expression "id". This will be something like "a.b.c".
    
    Returns:
    
    The id
  - getTuples
```
public List<String> getTuples()
```
  - bind
```
public Symbol bind(SymbolTable symtbl)
```
    Method to bind the expression to the symbol table as appropriate.
    
    Specified by:
    
    bind in class Expression
    
    Parameters:
    
    symtbl - Symbol Table
    
    Returns:
    
    The symbol for this expression
  - toString
```
public String toString()
```
    Accessor for string form of the expression. Returns something like "PrimaryExpression {a.b.c}" when left is null, or "PrimaryExpression {ParameterExpression {a}.b.c}" when left is the ParameterExpression
    
    Overrides:
    
    toString in class Object