Package org.apache.qpid.server.query.engine.evaluator

Class EvaluationContext

  • public class EvaluationContext
extends java.lang.Object
    Holds temporary values needed during query evaluation

    • Constructor Detail

      • EvaluationContext

        public EvaluationContext()

    • Method Detail

      • put

        public EvaluationContext put​(java.lang.Object key,
                             java.lang.Object value)

      • get

        public <T> T get​(java.lang.Object key,
                 java.lang.Class<T> type)

      • get

        public <T> T get​(java.lang.Object key)

      • contains

        public boolean contains​(java.lang.Object key)

      • remove

        public <T> T remove​(java.lang.String key)

      • clear

        public void clear()

      • incrementDepth

        public void incrementDepth()

      • getDepth

        public int getDepth()

      • startBuilding

        public void startBuilding()

      • isBuilding

        public boolean isBuilding()

      • isExecuting

        public boolean isExecuting()

      • putAlias

        public <T,​R> void putAlias​(java.lang.String alias,
                                 Expression<T,​R> expression)

      • containsAlias

        public boolean containsAlias​(java.lang.String alias)

      • removeAlias

        public <T,​R> Expression<T,​R> removeAlias​(java.lang.String alias)

      • getAlias

        public <T,​R> Expression<T,​R> getAlias​(java.lang.String alias)

      • startExecution

        public <T,​R> void startExecution​(QueryExpression<T,​R> query)

      • currentExecution

        public <T,​R> QueryExpression<T,​R> currentExecution()