io.jsondb

Class DefaultSchemaVersionComparator

java.lang.Object

io.jsondb.DefaultSchemaVersionComparator

All Implemented Interfaces:

java.util.Comparator<java.lang.String>

public class DefaultSchemaVersionComparator
extends java.lang.Object
implements java.util.Comparator<java.lang.String>

A default schema version comparator that expects the version to be in x.y.z form where each of the digits is strictly a integer.

Constructor Summary

Constructors

Constructor and Description
DefaultSchemaVersionComparator()

Method Summary

Modifier and Type	Method and Description
int	compare(java.lang.String expected, java.lang.String actual) compare the expected version with the actual version.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface java.util.Comparator

comparing, comparing, comparingDouble, comparingInt, comparingLong, equals, naturalOrder, nullsFirst, nullsLast, reversed, reverseOrder, thenComparing, thenComparing, thenComparing, thenComparingDouble, thenComparingInt, thenComparingLong

Constructor Detail

DefaultSchemaVersionComparator

public DefaultSchemaVersionComparator()

Method Detail

compare

public int compare(java.lang.String expected,
                   java.lang.String actual)

compare the expected version with the actual version. Checkout: http://stackoverflow.com/questions/6701948/efficient-way-to-compare-version-strings-in-java

Specified by:

compare in interface java.util.Comparator<java.lang.String>

Parameters:

expected - the version that is obtained from @Document annotation

actual - the version that is read from the .json file

Returns:

a negative integer, zero, or a positive integer as the first argument is less than, equal to, or greater than the second.