Predicate SourceCode GPL - https://github.com/iboxdb/db4o-gpl

java.lang.Object
- com.db4o.query.Predicate<ExtentType>

All Implemented Interfaces:

java.io.Serializable
```
public abstract class Predicate<ExtentType>
extends java.lang.Object
implements java.io.Serializable
```
Base class for native queries. See ObjectContainer.query(Predicate)

See Also:

ObjectContainer.query(Predicate), Serialized Form

Field Summary

Fields
Modifier and Type Field Description

static java.lang.String PREDICATEMETHOD_NAME
public for implementation reasons, please ignore.

Constructor Summary

Constructors
Constructor Description

Predicate()

Predicate(java.lang.Class<? extends ExtentType> extentType)

Method Summary

All Methods Instance Methods Abstract Methods Concrete Methods
Modifier and Type	Method	Description
`boolean`	`appliesTo(ExtentType candidate)`	public for implementation reasons, please ignore.
`java.lang.Class<? extends ExtentType>`	`extentType()`	public for implementation reasons, please ignore.
`java.lang.reflect.Method`	`getFilterMethod()`
`abstract boolean`	`match(ExtentType candidate)`	The match method that needs to be implemented by the user.

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

- Field Detail
  - PREDICATEMETHOD_NAME
```
public static final java.lang.String PREDICATEMETHOD_NAME
```
    public for implementation reasons, please ignore.
    
    See Also:
    
    Constant Field Values
- Constructor Detail
  - Predicate
```
public Predicate()
```
  - Predicate
```
public Predicate(java.lang.Class<? extends ExtentType> extentType)
```
- Method Detail
  - getFilterMethod
```
public java.lang.reflect.Method getFilterMethod()
```
  - extentType
```
public java.lang.Class<? extends ExtentType> extentType()
```
    public for implementation reasons, please ignore.
  - match
```
public abstract boolean match(ExtentType candidate)
```
    The match method that needs to be implemented by the user.
    
    Parameters:
    
    candidate - the candidate object passed from db4o
    
    Returns:
    
    true to include an object in the resulting ObjectSet
  - appliesTo
```
public boolean appliesTo(ExtentType candidate)
```
    public for implementation reasons, please ignore.