com.goldencode.p2j.persist

Class DynamicQueryHelper.QueryCacheKey

java.lang.Object

com.goldencode.p2j.persist.DynamicQueryHelper.QueryCacheKey

Enclosing class:

DynamicQueryHelper

private static class DynamicQueryHelper.QueryCacheKey
extends java.lang.Object

Class that keys the already generated JAST trees within the LFUAgingCache caches of DynamicQueryHelper.

Field Summary

Fields

Modifier and Type	Field and Description
private java.lang.Class<?>[]	bufferDMOs The DMO classes of the buffers
private java.lang.String[]	bufferNames The names of the buffers TODO: Normally this should be removed, or better said, replaced with a buffer matching algorithm because there are the same queries, only the name of the buffer differ.
private int	hashCode Hash code
private java.lang.String	query The query that generated a JAST tree.

Constructor Summary

Constructors

Constructor and Description
QueryCacheKey(java.lang.String query, java.util.List<Buffer> buffers) The constructor.

Method Summary

Modifier and Type	Method and Description
boolean	equals(java.lang.Object o) Checks whether some other object is "equal to" this one.
int	hashCode() Returns a pre-computed hash code value for the object.
java.lang.String	toString() Return a string representation of this object.

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

query

private final java.lang.String query

The query that generated a JAST tree.

bufferDMOs

private final java.lang.Class<?>[] bufferDMOs

The DMO classes of the buffers

bufferNames

private final java.lang.String[] bufferNames

The names of the buffers TODO: Normally this should be removed, or better said, replaced with a buffer matching algorithm because there are the same queries, only the name of the buffer differ.

hashCode

private final int hashCode

Hash code

Constructor Detail

QueryCacheKey

public QueryCacheKey(java.lang.String query,
                     java.util.List<Buffer> buffers)

The constructor. Constructs an immutable object that serves as the key for query cache.

Parameters:

query - The query in original 4GL language.

buffers - The list of Buffers the query is based of.

Method Detail

equals

public boolean equals(java.lang.Object o)

Checks whether some other object is "equal to" this one. Both query string and the list buffer of buffers must be equals.

Overrides:

equals in class java.lang.Object

Parameters:

o - Another object to compare to.

Returns:

true if this object is the same as the obj argument.

hashCode

public int hashCode()

Returns a pre-computed hash code value for the object. This method is supported for the benefit of hash tables such as those provided by HashMap.

Overrides:

hashCode in class java.lang.Object

Returns:

an integer value based on the query string and the buffer involved.

toString

public java.lang.String toString()

Return a string representation of this object.

Overrides:

toString in class java.lang.Object

Returns:

String representation of this object.