EntityRetentionGraph (onebusaway-gtfs-transformer 2.0.2 API)

java.lang.Object
- org.onebusaway.gtfs_transformer.factory.EntityRetentionGraph

```
public class EntityRetentionGraph
extends Object
```
We have the concept of retaining up and retaining down. Retain up: retain things that depend on the target object Retain down: retain things that the target object depends on Usually, we start by retaining some object, which starts as series of "retain up" operations to grab everything that depends on that object. As each object is retained up, it typically at this point also starts a subsequent chain of retain down operations, so that the dependencies of that object are retained as well.

Author:

bdferris

Constructor Summary

Constructors
Constructor Description

EntityRetentionGraph(GtfsRelationalDao dao)

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`int`	`getSize()`
`boolean`	`isRetained(Object object)`
`void`	`retain(Object object, boolean retainUp)`	Retain up: retain things that depend on the target object For example, if you retain up on a `Route`, we would also retain up on the `Trip` objects depending on this route Retain down: retain things that the target object depends on For example, if you retain down on a `Route`, we would also retain down on the route's `Agency`.
`void`	`retainDown(Object object)`	Retain down: retain things that the target object depends on For example, if you retain down on a `Route`, we would also retain down on the route's `Agency`.
`void`	`retainUp(Object object)`	Retain up: retain things that depend on the target object For example, if you retain up on a `Route`, we would also retain up on the `Trip` objects depending on this route
`void`	`setRetainAllStopTimesForTrip(boolean retainAllStopTimesForTrip)`
`void`	`setRetainBlocks(boolean retainBlocks)`

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

- Constructor Detail
  - EntityRetentionGraph
```
public EntityRetentionGraph(GtfsRelationalDao dao)
```
- Method Detail
  - setRetainBlocks
```
public void setRetainBlocks(boolean retainBlocks)
```
  - setRetainAllStopTimesForTrip
```
public void setRetainAllStopTimesForTrip(boolean retainAllStopTimesForTrip)
```
  - retainUp
```
public void retainUp(Object object)
```
    Retain up: retain things that depend on the target object For example, if you retain up on a Route, we would also retain up on the Trip objects depending on this route
    
    Parameters:
    
    object -
  - retainDown
```
public void retainDown(Object object)
```
    Retain down: retain things that the target object depends on For example, if you retain down on a Route, we would also retain down on the route's Agency.
    
    Parameters:
    
    object -
  - retain
```
public void retain(Object object,
                   boolean retainUp)
```
    Retain up: retain things that depend on the target object For example, if you retain up on a Route, we would also retain up on the Trip objects depending on this route Retain down: retain things that the target object depends on For example, if you retain down on a Route, we would also retain down on the route's Agency.
    
    Parameters:
    
    object -
  - isRetained
```
public boolean isRetained(Object object)
```
  - getSize
```
public int getSize()
```