com.pdd.pop.ext.glassfish.grizzly.attributes.IndexedAttributeAccessor Maven / Gradle / Ivy
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package com.pdd.pop.ext.glassfish.grizzly.attributes;
import com.pdd.pop.ext.glassfish.grizzly.utils.NullaryFunction;
/**
* The interface declares, that {@link AttributeHolder} supports
* indexed {@link Attribute} access.
*
* @see AttributeHolder
*/
public interface IndexedAttributeAccessor {
/**
* Internal method for dynamic attribute support.
* Return the value of the attribute by index.
* @param index the attribute index
* @return the value of the attribute by index
*/
Object getAttribute(int index);
/**
* Internal method for dynamic attribute support.
* Return the value of the attribute by index. If
* the attribute with such index is not set, set it to the
* default value, using the initializer, and return the default.
* @param index the attribute index
* @param initializer the default value {@link NullaryFunction}
* @return the value of the attribute by index
* @since 2.3.18
*/
Object getAttribute(int index, NullaryFunction initializer);
/**
* Internal method for dynamic attribute support.
* Set the attribute with the index to value.
* @param index the attribute index
* @param value the value
*/
void setAttribute(int index, Object value);
/**
* Internal method for dynamic attribute support.
* Removes the attribute with the index and returns its previous value.
*
* @param index the attribute index
* @return the previous value associated with the attribute
* @since 2.3.18
*/
Object removeAttribute(int index);
}