SqlMetaLogOperator (SQL Processor, Core Module 3.5.0 API)

java.lang.Object
- org.sqlproc.engine.impl.SqlMetaLogOperator

All Implemented Interfaces:

SqlMetaLogOperand
```
class SqlMetaLogOperator
extends Object
implements SqlMetaLogOperand
```
A META SQL sub-element. It represents a logical operator in SqlMetaLogExpr.

Author:

Vladimir Hudec

Nested Class Summary

Nested Classes
Modifier and Type Class Description

(package private) static class SqlMetaLogOperator.Type
The enumeration of the logical operator types.

Field Summary

Fields
Modifier and Type Field Description

private SqlMetaLogOperator.Type type
The type of the logical operator.

Constructor Summary

Constructors
Constructor Description

SqlMetaLogOperator(SqlMetaLogOperator.Type type)
Creates a new instance.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`(package private) SqlMetaLogOperator.Type`	`getType()`	Returns the type of the logical operator.
`boolean`	`processExpression(SqlProcessContext ctx)`	The main contract to evaluate a logical value of META SQL sub-elements.

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

- Field Detail
  - type
```
private SqlMetaLogOperator.Type type
```
    The type of the logical operator. It work as a operator between two sub-elements in SqlMetaLogExpr.
- Constructor Detail
  - SqlMetaLogOperator
```
SqlMetaLogOperator(SqlMetaLogOperator.Type type)
```
    Creates a new instance. It's used from inside ANTLR parser.
    
    Parameters:
    
    type - the type of the logical operator
- Method Detail
  - getType
```
SqlMetaLogOperator.Type getType()
```
    Returns the type of the logical operator.
    
    Returns:
    
    the type of the logical operator
  - processExpression
```
public boolean processExpression(SqlProcessContext ctx)
```
    The main contract to evaluate a logical value of META SQL sub-elements.
    
    Specified by:
    
    processExpression in interface SqlMetaLogOperand
    
    Parameters:
    
    ctx - the context for a dynamic ANSI SQL Query generation
    
    Returns:
    
    a logical value