CompGenReorganiser
Keywords: uk.ac.bbk.dcs.automed.qproc.optimise.optimisers.CompGenReorganiser class

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## uk.ac.bbk.dcs.automed.qproc.optimise.optimisers
Class CompGenReorganiser

    java.lang.Object
      uk.ac.bbk.dcs.automed.qproc.optimise.optimisers.CompGenReorganiser

    public class CompGenReorganiser

extends java.lang.Object

This optimiser is used to reorganise the generators in comprehensions. If two or more generators are over schemes from the same schema, a new sub comprehension is constructed containing these generators, thus constructing a bigger sub query that can be submitted to the data source wrapper. 1. Method reorganiseOneComp is used to reorganise one-level comprehesion 2. Method optimise is used to handle a comprehesion tree, first handle the sub query in the comprehesion, then handle the comprehension itself as a one-level one

Author:
  Hao Fan, Lucas Zamboulis

Field Summary
`protected java.util.logging.Logger` | `logger`

Constructor Summary
`CompGenReorganiser()`

Method Summary
`boolean` | `optimise(ASG g)`

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

Field Detail

### logger

    protected java.util.logging.Logger logger

Constructor Detail

### CompGenReorganiser

    public CompGenReorganiser()

Method Detail

### optimise

    public boolean optimise(ASG g)

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