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

org.teiid.query.sql.symbol.Constant
This class represents a literal value in a SQL string. The Constant object has a value and a type for that value. In many cases, the type can be derived from the type of the value, but that is not true if the value is null. In that case, the type is unknown and is set to the null type until the type is resolved at a later point.

      //1 Long
      //1 short
      //20 bigdecimal with 671 total integers in them.
      List<Expression> schema = new ArrayList<Expression>();
      for (int i = 0; i <82; i++) {
        schema.add(new Constant(null, DataTypeManager.DefaultDataClasses.STRING));
      }
      for (int i = 0; i <11; i++) {
        schema.add(new Constant(null, DataTypeManager.DefaultDataClasses.DATE));
      }
      schema.add(new Constant(null, DataTypeManager.DefaultDataClasses.LONG));
      schema.add(new Constant(null, DataTypeManager.DefaultDataClasses.SHORT));
      for (int i = 0; i <20; i++) {
        schema.add(new Constant(null, DataTypeManager.DefaultDataClasses.BIG_DECIMAL));
      }
      
      BufferServiceImpl svc = new BufferServiceImpl();
        svc.setDiskDirectory(UnitTestUtil.getTestScratchPath()+"/teiid/1");
        svc.setUseDisk(false);

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                }
                
                ElementSymbol symbol = (ElementSymbol)element;
                
                if (innerGroups.contains(symbol.getGroupSymbol())) {
                    return new Constant(null, symbol.getType());
                }
                
                return element;
            }
        };

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        assertEquals(100, batch.getEndRow());
        assertTrue(batch.getTerminationFlag());
    }
    
    @Test public void testOffsetWithoutLimit() throws Exception {
        LimitNode node = new LimitNode(1, null, new Constant(new Integer(10)));
        node.addChild(new FakeRelationalNode(2, getRows(10), 50));
        node.open();


        TupleBatch batch = node.nextBatch();
        assertNotNull(batch);

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        }
        return data;
    }
    
    private static LimitNode getOffsetNode(int offset, RelationalNode child) throws Exception {
        LimitNode node = new LimitNode(1, new Constant(new Integer(-1)), new Constant(new Integer(offset)));
        node.addChild(child);
        node.open();
        return node;
    }

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        node.open();
        return node;
    }
    
    private static LimitNode getLimitNode(int limit, RelationalNode child) throws Exception {
        LimitNode node = new LimitNode(1, new Constant(new Integer(limit)), new Constant(new Integer(0)));
        node.addChild(child);
        node.open();
        return node;
    }

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        node.open();
        return node;
    }
    
    @Test public void testClone() {
      LimitNode node = new LimitNode(1, new Constant(new Integer(-1)), null);
      
      LimitNode clone = (LimitNode)node.clone();
      
      assertEquals(node.getLimitExpr(), clone.getLimitExpr());
      assertNull(clone.getOffsetExpr());
      
      node = new LimitNode(1, null, new Constant(new Integer(-1)));
      clone = (LimitNode)node.clone();


      assertNull(clone.getLimitExpr());
    }

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    public TestCompareCriteriaImpl(String name) {
        super(name);
    }


    public static org.teiid.query.sql.lang.CompareCriteria helpExample(int operator, int leftVal, int rightVal) {
        Constant left = new Constant(new Integer(leftVal));
        Constant right = new Constant(new Integer(rightVal));
        return new org.teiid.query.sql.lang.CompareCriteria(left, operator, right);
    }

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                 setQuery);
    }   
    
    public void testUnionWithLimit(){
        SetQuery setQuery = exampleSetQuery(Operation.UNION);
        setQuery.setLimit(new Limit(null, new Constant(1)));


        TestParser.helpTest("SELECT a FROM g UNION select b from h LIMIT 1",  //$NON-NLS-1$
                 "SELECT a FROM g UNION SELECT b FROM h LIMIT 1",  //$NON-NLS-1$
                 setQuery);
    }

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        }
        while (varIter.hasNext()) {
            ElementSymbol varSymbol = varIter.next().clone();
            
            varSymbol.getGroupSymbol().setName(ProcedureReservedWords.CHANGING);
            result.put(varSymbol, new Constant(Boolean.TRUE));
            if (!changingOnly) {
              varSymbol = varSymbol.clone();
              varSymbol.getGroupSymbol().setName(ProcedureReservedWords.INPUTS);
              result.put(varSymbol, (Expression)valIter.next());
            }
        }
        
        Collection<ElementSymbol> insertElmnts = ResolverUtil.resolveElementsInGroup(insert.getGroup(), metadata);


        insertElmnts.removeAll(insert.getVariables());


        Iterator<ElementSymbol> defaultIter = insertElmnts.iterator();
        while(defaultIter.hasNext()) {
            ElementSymbol varSymbol = defaultIter.next().clone();
            varSymbol.getGroupSymbol().setName(ProcedureReservedWords.CHANGING);
            result.put(varSymbol, new Constant(Boolean.FALSE));
            
            if (!changingOnly) {
                Expression value = ResolverUtil.getDefault(varSymbol, metadata);
              varSymbol = varSymbol.clone();
              varSymbol.getGroupSymbol().setName(ProcedureReservedWords.INPUTS);

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public class TestCriteriaEvaluator {


  // ################################## TEST HELPERS ################################
  
    private void helpTestMatch(String value, String pattern, char escape, boolean negated, boolean expectedMatch) throws ExpressionEvaluationException, BlockedException, TeiidComponentException {
        MatchCriteria crit = new MatchCriteria(new Constant(value), new Constant(pattern), escape);
        crit.setNegated(negated);
        boolean actualMatch = Evaluator.evaluate(crit);
        // Compare actual and expected match
        assertEquals("Match criteria test failed for value=[" + value + "], pattern=[" + pattern + "], hasEscape=" + (escape != MatchCriteria.NULL_ESCAPE_CHAR) + ": ", expectedMatch, actualMatch); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$ //$NON-NLS-4$
    }

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