📄 queryexpr.java
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package net.tinyos.tinydb;/** Abstract interface for all kinds of expressions that can appear in a query*/public interface QueryExpr { /** Return true if this expression is an aggregator */ public boolean isAgg(); /** Return the id of the field this expression applies to */ public short getField(); /** Return the arithmetic operation that is used in the arithmetic expression that will be performed to the field. */ public short getFieldOp(); /** Return the constant that is used in the arithmetic expression that will be performed on the field. */ public short getFieldConst();}
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