Libraries.Web.Page.Attributes

The Attributes class stores a number of attribute objects. Effectively, this class is just a wrapper for the HashTable class, adding an action related to automatically printing out the attributes.

Example Code

use Libraries.Web.Page.Attributes
Attribute attributes
Attribute attribute
attribute:SetName("src")
attribute:SetValue("http://www.google.com")
attributes:Add(attribute)

This action adds an Attribute to the object. If an attribute already exists for a given key, that attribute is replaced with the current one.

Example Code

use Libraries.Web.Page.Attributes
        use Libraries.Web.Page.Attribute

        Attributes attributes
        Attribute attribute
        attribute:SetName("src")
        attribute:SetValue("http://www.google.com")
        attributes:Add(attribute)

This action compares two object hash codes and returns an integer. The result is larger if this hash code is larger than the object passed as a parameter, smaller, or equal. In this case, -1 means smaller, 0 means equal, and 1 means larger. This action was changed in Quorum 7 to return an integer, instead of a CompareResult object, because the previous implementation was causing efficiency issues.

Example Code

Object o
        Object t
        integer result = o:Compare(t) //1 (larger), 0 (equal), or -1 (smaller)

This action determines if two objects are equal based on their hash code values.

Example Code

use Libraries.Language.Object
        use Libraries.Language.Types.Text
        Object o
        Text t
        boolean result = o:Equals(t)

This action returns an attribute. If no attribute exists for a given key, this action returns undefined.

Example Code

use Libraries.Web.Page.Attributes
        use Libraries.Web.Page.Attribute

        Attributes attributes
        //as we have not set any attribute, this would
        //return undefined
        Attribute attribute = attributes:GetAttribute("src")

This action gets the hash code for an object.

Example Code

Object o
        integer hash = o:GetHashCode()

This action returns an iterator of all attributes stored in this object.

Example Code

use Libraries.Web.Page.Attributes
        use Libraries.Web.Page.Attribute
        use Libraries.Containers.Iterator

        Attributes attributes
        Attribute attribute
        attribute:SetName("src")
        attribute:SetValue("http://www.google.com")
        attributes:Add(attribute)

        //output out all of the attributes
        Iterator<Attribute> it =  attributes:GetIterator()
        repeat while it:HasNext()
            Attribute at = it:Next()
            output at:Generate()
        end

This action returns the number of attributes that are currently stored in this object.

Example Code

use Libraries.Web.Page.Attributes

        Attributes attributes
        //this would return zero
        integer num = attributes:GetSize()

This action returns whether or not an attribute exists for the key passed in as a parameter.

Example Code

use Libraries.Web.Page.Attributes

        Attributes attributes
        //this would return false
        boolean exists = attributes:HasAttribute("src")

This action removes an attribute with a particular key. If that attribute does not exist, then this action returns undefined.

Example Code

use Libraries.Web.Page.Attributes
        use Libraries.Web.Page.Attribute

        Attributes attributes
        Attribute attribute
        attribute:SetName("src")
        attribute:SetValue("http://www.google.com")
        attributes:Add(attribute)
        Attribute value = attributes:Remove("src")