Package com.espertech.esper.common.internal.epl.expression.core

Class ExprNodeUtilityCompare

java.lang.Object

com.espertech.esper.common.internal.epl.expression.core.ExprNodeUtilityCompare

public class ExprNodeUtilityCompare
extends Object

Constructor Summary

Constructors

Constructor	Description
ExprNodeUtilityCompare()

Method Summary

Modifier and Type	Method	Description
static boolean	deepEquals(ExprNode[] one, ExprNode[] two, boolean ignoreStreamPrefix)	Compares two expression nodes via deep comparison, considering all child nodes of either side.
static boolean	deepEquals(ExprNode nodeOne, ExprNode nodeTwo, boolean ignoreStreamPrefix)	Compare two expression nodes and their children in exact child-node sequence, returning true if the 2 expression nodes trees are equals, or false if they are not equals.
static boolean	deepEquals(List<ExprNode> one, List<ExprNode> two)
static boolean	deepEqualsIgnoreDupAndOrder(ExprNode[] setOne, ExprNode[] setTwo)
static boolean	deepEqualsIsSubset(ExprNode[] subset, ExprNode[] superset)
static boolean	deepEqualsNullChecked(ExprNode nodeOne, ExprNode nodeTwo, boolean ignoreStreamPrefix)

Methods inherited from class java.lang.Object

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

Constructor Details

ExprNodeUtilityCompare

public ExprNodeUtilityCompare()

Method Details

deepEqualsIsSubset

public static boolean deepEqualsIsSubset(ExprNode[] subset,
 ExprNode[] superset)

deepEqualsIgnoreDupAndOrder

public static boolean deepEqualsIgnoreDupAndOrder(ExprNode[] setOne,
 ExprNode[] setTwo)

deepEquals

public static boolean deepEquals(ExprNode nodeOne,
 ExprNode nodeTwo,
 boolean ignoreStreamPrefix)

Compare two expression nodes and their children in exact child-node sequence, returning true if the 2 expression nodes trees are equals, or false if they are not equals.

Recursive call since it uses this method to compare child nodes in the same exact sequence. Nodes are compared using the equalsNode method.

Parameters:

nodeOne - - first expression top node of the tree to compare

nodeTwo - - second expression top node of the tree to compare

ignoreStreamPrefix - when the equals-comparison can ignore prefix of event properties

Returns:

false if this or all child nodes are not equal, true if equal

deepEqualsNullChecked

public static boolean deepEqualsNullChecked(ExprNode nodeOne,
 ExprNode nodeTwo,
 boolean ignoreStreamPrefix)

deepEquals

public static boolean deepEquals(ExprNode[] one,
 ExprNode[] two,
 boolean ignoreStreamPrefix)

Compares two expression nodes via deep comparison, considering all child nodes of either side.

Parameters:

one - array of expressions

two - array of expressions

ignoreStreamPrefix - indicator whether we ignore stream prefixes and instead use resolved property name

Returns:

true if the expressions are equal, false if not

deepEquals

public static boolean deepEquals(List<ExprNode> one,
 List<ExprNode> two)