Package edu.uci.ics.hyracks.algebricks.core.algebra.expressions

Examples of edu.uci.ics.hyracks.algebricks.core.algebra.expressions.ConstantExpression

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                } else {
                    return function.getSignature().getReturnType();
                }
            case CONSTANT:
                // Consider constant values.
                ConstantExpression constantExpression = (ConstantExpression) argFirstLe;
                VXQueryConstantValue constantValue = (VXQueryConstantValue) constantExpression.getValue();
                return constantValue.getType();
            case VARIABLE:
                VariableReferenceExpression variableRefExp = (VariableReferenceExpression) argFirstLe;
                LogicalVariable variableId = variableRefExp.getVariableReference();
                Mutable<ILogicalOperator> variableProducer = OperatorToolbox.findProducerOf(opRef, variableId);
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            // Check to see if the expression is a constant expression and type string.
            ILogicalExpression logicalExpression2 = (ILogicalExpression) assign2.getExpressions().get(0).getValue();
            if (logicalExpression2.getExpressionTag() != LogicalExpressionTag.CONSTANT) {
                return null;
            }
            ConstantExpression constantExpression = (ConstantExpression) logicalExpression2;
            constantValue = (VXQueryConstantValue) constantExpression.getValue();
            if (constantValue.getType() != SequenceType.create(BuiltinTypeRegistry.XS_STRING, Quantifier.QUANT_ONE)) {
                return null;
            }
        } else if (op3.getOperatorTag() == LogicalOperatorTag.EMPTYTUPLESOURCE) {
            ILogicalExpression logicalExpression2 = (ILogicalExpression) functionCall.getArguments().get(0).getValue();
            if (logicalExpression2.getExpressionTag() != LogicalExpressionTag.FUNCTION_CALL) {
                return null;
            }
            AbstractFunctionCallExpression functionCall2 = (AbstractFunctionCallExpression) logicalExpression2;
            if (!functionCall2.getFunctionIdentifier().equals(BuiltinOperators.PROMOTE.getFunctionIdentifier())) {
                return null;
            }

            ILogicalExpression logicalExpression3 = (ILogicalExpression) functionCall2.getArguments().get(0).getValue();
            if (logicalExpression3.getExpressionTag() != LogicalExpressionTag.FUNCTION_CALL) {
                return null;
            }
            AbstractFunctionCallExpression functionCall3 = (AbstractFunctionCallExpression) logicalExpression3;
            if (!functionCall3.getFunctionIdentifier().equals(BuiltinFunctions.FN_DATA_1.getFunctionIdentifier())) {
                return null;
            }

            ILogicalExpression logicalExpression4 = (ILogicalExpression) functionCall3.getArguments().get(0).getValue();
            if (logicalExpression4.getExpressionTag() != LogicalExpressionTag.CONSTANT) {
                return null;
            }
            ConstantExpression constantExpression = (ConstantExpression) logicalExpression4;
            constantValue = (VXQueryConstantValue) constantExpression.getValue();
            if (constantValue.getType() != SequenceType.create(BuiltinTypeRegistry.XS_STRING, Quantifier.QUANT_ONE)) {
                return null;
            }
        } else {
            return null;
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        builder.setExpressionTypeComputer(new IExpressionTypeComputer() {
            @Override
            public Object getType(ILogicalExpression expr, IMetadataProvider<?, ?> metadataProvider,
                    IVariableTypeEnvironment env) throws AlgebricksException {
                if (expr.getExpressionTag() == LogicalExpressionTag.CONSTANT) {
                    ConstantExpression ce = (ConstantExpression) expr;
                    IAlgebricksConstantValue acv = ce.getValue();
                    if (acv == ConstantExpression.TRUE.getValue() || acv == ConstantExpression.FALSE.getValue()) {
                        return SequenceType.create(BuiltinTypeRegistry.XS_BOOLEAN, Quantifier.QUANT_ONE);
                    }
                    VXQueryConstantValue cv = (VXQueryConstantValue) acv;
                    return cv.getType();
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        IPointable p = (BooleanPointable) BooleanPointable.FACTORY.createPointable();
        XDMConstants.setTrue(p);
        VXQueryConstantValue cv = new VXQueryConstantValue(SequenceType.create(BuiltinTypeRegistry.XS_BOOLEAN,
                Quantifier.QUANT_ONE), p.getByteArray());
        AssignOperator trueAssignOp = new AssignOperator(trueVar, new MutableObject<ILogicalExpression>(
                new ConstantExpression(cv)));

        ILogicalOperator aggInput = aggregate.getInputs().get(0).getValue();
        aggregate.getInputs().get(0).setValue(trueAssignOp);
        trueAssignOp.getInputs().add(new MutableObject<ILogicalOperator>(aggInput));
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                    }
                    default:
                        throw new SystemException(ErrorCode.SYSE0001);
                }
                bytes = Arrays.copyOf(baaos.getByteArray(), baaos.size());
                return new ConstantExpression(new VXQueryConstantValue(type, bytes));
            }
            throw new UnsupportedOperationException();
        } catch (IOException e) {
            throw new SystemException(ErrorCode.SYSE0001, e);
        }
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        builder.setExpressionTypeComputer(new IExpressionTypeComputer() {
            @Override
            public Object getType(ILogicalExpression expr, IMetadataProvider<?, ?> metadataProvider,
                    IVariableTypeEnvironment env) throws AlgebricksException {
                if (expr.getExpressionTag() == LogicalExpressionTag.CONSTANT) {
                    ConstantExpression ce = (ConstantExpression) expr;
                    IAlgebricksConstantValue acv = ce.getValue();
                    if (acv == ConstantExpression.TRUE.getValue() || acv == ConstantExpression.FALSE.getValue()) {
                        return SequenceType.create(BuiltinTypeRegistry.XS_BOOLEAN, Quantifier.QUANT_ONE);
                    }
                    VXQueryConstantValue cv = (VXQueryConstantValue) acv;
                    return cv.getType();
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                    }
                    default:
                        throw new SystemException(ErrorCode.SYSE0001);
                }
                bytes = Arrays.copyOf(baaos.getByteArray(), baaos.size());
                return new ConstantExpression(new VXQueryConstantValue(type, bytes));
            }
            throw new UnsupportedOperationException();
        } catch (IOException e) {
            throw new SystemException(ErrorCode.SYSE0001, e);
        }
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        builder.setExpressionTypeComputer(new IExpressionTypeComputer() {
            @Override
            public Object getType(ILogicalExpression expr, IMetadataProvider<?, ?> metadataProvider,
                    IVariableTypeEnvironment env) throws AlgebricksException {
                if (expr.getExpressionTag() == LogicalExpressionTag.CONSTANT) {
                    ConstantExpression ce = (ConstantExpression) expr;
                    IAlgebricksConstantValue acv = ce.getValue();
                    if (acv == ConstantExpression.TRUE.getValue() || acv == ConstantExpression.FALSE.getValue()) {
                        return SequenceType.create(BuiltinTypeRegistry.XS_BOOLEAN, Quantifier.QUANT_ONE);
                    }
                    VXQueryConstantValue cv = (VXQueryConstantValue) acv;
                    return cv.getType();
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                    }
                    default:
                        throw new SystemException(ErrorCode.SYSE0001);
                }
                bytes = Arrays.copyOf(baaos.getByteArray(), baaos.size());
                return new ConstantExpression(new VXQueryConstantValue(type, bytes));
            }
            throw new UnsupportedOperationException();
        } catch (IOException e) {
            throw new SystemException(ErrorCode.SYSE0001, e);
        }
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Related Classes of edu.uci.ics.hyracks.algebricks.core.algebra.expressions.ConstantExpression

  • org.apache.vxquery.compiler.rewriter.rules.AbstractCollectionRule
  • org.apache.vxquery.compiler.rewriter.rules.ConsolidateAssignAggregateRule
  • org.apache.vxquery.compiler.rewriter.rules.util.ExpressionToolbox
  • org.apache.vxquery.xmlquery.query.XMLQueryCompiler
  • org.apache.vxquery.xmlquery.translator.XMLQueryTranslator
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