## cascading.operation.assertion
Class AssertGroupBase

    java.lang.Object
      cascading.operation.BaseOperation<C>
          cascading.operation.assertion.BaseAssertion<AssertGroupBase.Context>
              cascading.operation.assertion.AssertGroupBase

All Implemented Interfaces:
  Assertion<AssertGroupBase.Context>, GroupAssertion<AssertGroupBase.Context>, Operation<AssertGroupBase.Context>, PlannedOperation<AssertGroupBase.Context>, Serializable

Direct Known Subclasses:
  AssertGroupSizeEquals, AssertGroupSizeLessThan, AssertGroupSizeMoreThan

    public abstract class AssertGroupBase

extends BaseAssertion<AssertGroupBase.Context>
implements GroupAssertion<AssertGroupBase.Context>

See Also:
  Serialized Form

Nested Class Summary
`static class` `AssertGroupBase.Context`

Field Summary
`protected String` `patternString` Field patternString
`protected long` `size` Field size

Fields inherited from class cascading.operation.BaseOperation
`fieldDeclaration, numArgs, trace`

Fields inherited from interface cascading.operation.Operation
`ANY`

Constructor Summary
`` `AssertGroupBase(String message, long size)`
`protected` `AssertGroupBase(String message, String patternString, long size)`

Method Summary
`void` `aggregate(FlowProcess flowProcess, GroupAssertionCall<AssertGroupBase.Context> assertionCall)` Method aggregate is called for each `TupleEntry` value in the current grouping.
`protected abstract boolean` `assertFails(Long groupSize)`
`void` `doAssert(FlowProcess flowProcess, GroupAssertionCall<AssertGroupBase.Context> assertionCall)` Method doAssert performs the assertion.
`boolean` `equals(Object object)`
`int` `hashCode()`
`void` `prepare(FlowProcess flowProcess, OperationCall<AssertGroupBase.Context> operationCall)` Method prepare does nothing, and may safely be overridden.
`void` `start(FlowProcess flowProcess, GroupAssertionCall<AssertGroupBase.Context> assertionCall)` Method start initializes the aggregation procedure and is called for every unique grouping.

Methods inherited from class cascading.operation.assertion.BaseAssertion
`fail, fail, getMessage, supportsPlannerLevel, throwFail, throwFail`

Methods inherited from class cascading.operation.BaseOperation
`cleanup, getFieldDeclaration, getNumArgs, getTrace, isSafe, printOperationInternal, toString, toStringInternal`

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

Methods inherited from interface cascading.operation.PlannedOperation
`supportsPlannerLevel`

Methods inherited from interface cascading.operation.Operation
`cleanup, getFieldDeclaration, getNumArgs, isSafe`

Field Detail

### patternString

    protected String patternString

  Field patternString

### size

    protected long size

  Field size

Constructor Detail

### AssertGroupBase

    @ConstructorProperties(value={"message","size"})
    public AssertGroupBase(String message,
                                                      long size)

### AssertGroupBase

    @ConstructorProperties(value={"message","patternString","size"})
    protected AssertGroupBase(String message,
                                                         String patternString,
                                                         long size)

Method Detail

### prepare

    public void prepare(FlowProcess flowProcess,
                        OperationCall<AssertGroupBase.Context> operationCall)

  Description copied from class: `BaseOperation`
  Method prepare does nothing, and may safely be overridden.

  Specified by:
    `prepare` in interface `Operation<AssertGroupBase.Context>`
  Overrides:
    `prepare` in class `BaseOperation<AssertGroupBase.Context>`

### start

    public void start(FlowProcess flowProcess,
                      GroupAssertionCall<AssertGroupBase.Context> assertionCall)

  Description copied from interface: `GroupAssertion`
  Method start initializes the aggregation procedure and is called for every unique grouping.

  The AggregatorCall context should be initialized here if necessary.

  The first time this method is called for a given 'process', the AggregatorCall context will be null. This method should set a new instance of the user defined context object. When the AggregatorCall context is not null, it is up to the developer to create a new instance, or 'recycle' the given instance. If recycled, it must be re-initialized to remove any previous state/values.

  For example, if a Map is used to hold the intermediate data for each subsequent `GroupAssertion.aggregate(cascading.flow.FlowProcess, GroupAssertionCall)` call, new HashMap() should be set on the AggregatorCall instance when `OperationCall.getContext()` is null. On the next grouping, start() will be called again, but this time with the old Map instance. In this case, map.clear() should be invoked before returning.

  Specified by:
    `start` in interface `GroupAssertion<AssertGroupBase.Context>`
  Parameters:
    `flowProcess` - of type FlowProcess
    `assertionCall` - of type GroupAssertionCall

### aggregate

    public void aggregate(FlowProcess flowProcess,
                          GroupAssertionCall<AssertGroupBase.Context> assertionCall)

  Description copied from interface: `GroupAssertion`
  Method aggregate is called for each `TupleEntry` value in the current grouping.

  Specified by:
    `aggregate` in interface `GroupAssertion<AssertGroupBase.Context>`
  Parameters:
    `flowProcess` - of type FlowProcess
    `assertionCall` - of type GroupAssertionCall

### doAssert

    public void doAssert(FlowProcess flowProcess,
                         GroupAssertionCall<AssertGroupBase.Context> assertionCall)

  Description copied from interface: `GroupAssertion`
  Method doAssert performs the assertion.

  Specified by:
    `doAssert` in interface `GroupAssertion<AssertGroupBase.Context>`
  Parameters:
    `flowProcess` - of type FlowProcess
    `assertionCall` - of type GroupAssertionCall

### assertFails

    protected abstract boolean assertFails(Long groupSize)

### equals

    public boolean equals(Object object)

  Overrides:
    `equals` in class `BaseAssertion<AssertGroupBase.Context>`

### hashCode

    public int hashCode()

  Overrides:
    `hashCode` in class `BaseAssertion<AssertGroupBase.Context>`

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