PropertyPath.PathSegment

NON_REPEATED_CARDINALITY

public static final int NON_REPEATED_CARDINALITY

A marker variable to signify that a PathSegment represents a schema property that isn't indexed into. The value is chosen to be invalid if used as an array index.

Constant Value: -1 (0xffffffff)

create

public static PropertyPath.PathSegment create (String propertyName)

Creation method that accepts and validates a property name

The property index is set to NON_REPEATED_CARDINALITY

create

public static PropertyPath.PathSegment create (String propertyName, 
                int propertyIndex)

Creation method that accepts and validates both a property name and the index into the property.

The property name may not be blank. It also may not contain square brackets or dots, as they are control characters in property paths. The index into the property may not be negative, unless it is NON_REPEATED_CARDINALITY, as these are invalid array indices.

equals

public boolean equals (Object o)

Indicates whether some other object is "equal to" this one.

The equals method implements an equivalence relation on non-null object references:

• It is reflexive: for any non-null reference value x, x.equals(x) should return true.
• It is symmetric: for any non-null reference values x and y, x.equals(y) should return true if and only if y.equals(x) returns true.
• It is transitive: for any non-null reference values x, y, and z, if x.equals(y) returns true and y.equals(z) returns true, then x.equals(z) should return true.
• It is consistent: for any non-null reference values x and y, multiple invocations of x.equals(y) consistently return true or consistently return false, provided no information used in equals comparisons on the objects is modified.
• For any non-null reference value x, x.equals(null) should return false.

An equivalence relation partitions the elements it operates on into equivalence classes; all the members of an equivalence class are equal to each other. Members of an equivalence class are substitutable for each other, at least for some purposes.

getPropertyIndex

public int getPropertyIndex ()

Returns the index into the property, or NON_REPEATED_CARDINALITY if this does not represent a PathSegment with an index.

getPropertyName

public String getPropertyName ()

Returns the name of the property.

hashCode

public int hashCode ()

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

The general contract of hashCode is:

• Whenever it is invoked on the same object more than once during an execution of a Java application, the hashCode method must consistently return the same integer, provided no information used in equals comparisons on the object is modified. This integer need not remain consistent from one execution of an application to another execution of the same application.
• If two objects are equal according to the equals method, then calling the hashCode method on each of the two objects must produce the same integer result.
• It is not required that if two objects are unequal according to the equals method, then calling the hashCode method on each of the two objects must produce distinct integer results. However, the programmer should be aware that producing distinct integer results for unequal objects may improve the performance of hash tables.

toString

public String toString ()

Returns a path representing a PathSegment, either "foo" or "foo[1]"