Examples of AggregateSymbol

org.teiid.query.sql.symbol.AggregateSymbol

An aggregate symbol represents an aggregate function in the SELECT or HAVING clauses. It extends ExpressionSymbol as they have many things in common. The aggregate symbol is typically something like SUM(stock.quantity * 2). There are five supported aggregate functions: COUNT, SUM, AVG, MIN, and MAX. Aggregate functions contain an expression - this data is managed by the super class, ExpressionSymbol. Aggregate functions may also specify a DISTINCT flag to indicate that duplicates should be ignored. The DISTINCT flag may be set for all five aggregate functions but is ignored for the computation of MIN and MAX. One special use of an aggregate symbol is for the symbol COUNT(*). The * expression is encoded by setting the expression to null. This may ONLY be used with the COUNT function.

The type of an aggregate symbol depends on the function and the type of the underlying expression. The type of a COUNT function is ALWAYS integer. MIN and MAX functions take the type of their contained expression. AVG and SUM vary depending on the type of the expression. If the expression is of a type other than biginteger, the aggregate function returns type long. For the case of biginteger, the aggregate function returns type biginteger. Similarly, all floating point expressions not of type bigdecimal return type double and bigdecimal maps to bigdecimal.

Examples of org.teiid.query.sql.symbol.AggregateSymbol

  
    
  // ################################## ACTUAL TESTS ################################
  
  public void testParser1() {
    AggregateSymbol as = new AggregateSymbol("count", NonReserved.COUNT, false, sampleElement()); //$NON-NLS-1$
    helpParser(as, "COUNT(m.g.c)"); //$NON-NLS-1$
  }

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Examples of org.teiid.query.sql.symbol.AggregateSymbol

    AggregateSymbol as = new AggregateSymbol("count", NonReserved.COUNT, false, sampleElement()); //$NON-NLS-1$
    helpParser(as, "COUNT(m.g.c)"); //$NON-NLS-1$
  }


  public void testParser2() {
    AggregateSymbol as = new AggregateSymbol("count", NonReserved.COUNT, true, sampleElement()); //$NON-NLS-1$
    helpParser(as, "COUNT(DISTINCT m.g.c)"); //$NON-NLS-1$
  }

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Examples of org.teiid.query.sql.symbol.AggregateSymbol

    AggregateSymbol as = new AggregateSymbol("count", NonReserved.COUNT, true, sampleElement()); //$NON-NLS-1$
    helpParser(as, "COUNT(DISTINCT m.g.c)"); //$NON-NLS-1$
  }


  public void testParser3() {
    AggregateSymbol as = new AggregateSymbol("x", NonReserved.MIN, false, sampleConstant()); //$NON-NLS-1$
    helpParser(as, "MIN(5)"); //$NON-NLS-1$
  }

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Examples of org.teiid.query.sql.symbol.AggregateSymbol

    AggregateSymbol as = new AggregateSymbol("x", NonReserved.MIN, false, sampleConstant()); //$NON-NLS-1$
    helpParser(as, "MIN(5)"); //$NON-NLS-1$
  }


  public void testParser4() {
    AggregateSymbol as = new AggregateSymbol("x", NonReserved.MAX, false, sampleFunction()); //$NON-NLS-1$
    helpParser(as, "MAX((m.g.c + 5))"); //$NON-NLS-1$
  }

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Examples of org.teiid.query.sql.symbol.AggregateSymbol

    AggregateSymbol as = new AggregateSymbol("x", NonReserved.MAX, false, sampleFunction()); //$NON-NLS-1$
    helpParser(as, "MAX((m.g.c + 5))"); //$NON-NLS-1$
  }


  public void testParser5() {
    AggregateSymbol as = new AggregateSymbol("x", NonReserved.COUNT, false, null); //$NON-NLS-1$
    helpParser(as, "COUNT(*)"); //$NON-NLS-1$
  }

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Examples of org.teiid.query.sql.symbol.AggregateSymbol

    AggregateSymbol as = new AggregateSymbol("x", NonReserved.COUNT, false, null); //$NON-NLS-1$
    helpParser(as, "COUNT(*)"); //$NON-NLS-1$
  }
    
  public void testEquals1() { 
    AggregateSymbol as = new AggregateSymbol("x", NonReserved.COUNT, true, sampleElement()); //$NON-NLS-1$
    helpEquals(as, as, true);    
  }

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Examples of org.teiid.query.sql.symbol.AggregateSymbol

    AggregateSymbol as = new AggregateSymbol("x", NonReserved.COUNT, true, sampleElement()); //$NON-NLS-1$
    helpEquals(as, as, true);    
  }


  public void testEquals2() { 
    AggregateSymbol as1 = new AggregateSymbol("x", NonReserved.COUNT, true, sampleElement()); //$NON-NLS-1$
    AggregateSymbol as2 = (AggregateSymbol) as1.clone();
    helpEquals(as1, as2, true);    
  }

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Examples of org.teiid.query.sql.symbol.AggregateSymbol

    helpEquals(as1, as2, true);    
  }


    //just changing the name of an aggregatesymbol doesn't matter
  public void testEquals3() { 
    AggregateSymbol as1 = new AggregateSymbol("x", NonReserved.COUNT, true, sampleElement()); //$NON-NLS-1$
    AggregateSymbol as2 = new AggregateSymbol("y", NonReserved.COUNT, true, sampleElement()); //$NON-NLS-1$
    helpEquals(as1, as2, true);    
  }

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Examples of org.teiid.query.sql.symbol.AggregateSymbol

    AggregateSymbol as2 = new AggregateSymbol("y", NonReserved.COUNT, true, sampleElement()); //$NON-NLS-1$
    helpEquals(as1, as2, true);    
  }
  
  public void testEquals4() { 
    AggregateSymbol as1 = new AggregateSymbol("count", NonReserved.COUNT, false, null); //$NON-NLS-1$
    AggregateSymbol as2 = (AggregateSymbol) as1.clone();
    helpEquals(as1, as2, true);    
  }

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Examples of org.teiid.query.sql.symbol.AggregateSymbol

    AggregateSymbol as2 = (AggregateSymbol) as1.clone();
    helpEquals(as1, as2, true);    
  }


  public void testSelfEquivalence(){
    AggregateSymbol test = new AggregateSymbol("x", NonReserved.COUNT, true, sampleElement()); //$NON-NLS-1$
    int equals = 0;
    UnitTestUtil.helpTestEquivalence(equals, test, test);
  }

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