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

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

98
99
100
101
102
103
104
105
106
107
        LogicalVariable assignVariable = context.newVar();
        AssignOperator aOp = new AssignOperator(assignVariable, assignExpression);
        for (Mutable<ILogicalOperator> input : aggregate.getInputs()) {
            aOp.getInputs().add(input);
        }
        functionCall.getArguments().get(0).setValue(new VariableReferenceExpression(assignVariable));
        unnest.getInputs().get(0).setValue(aOp);

        return true;
    }
View Full Code Here
44
45
46
47
48
49
50
51
52
53
54
55
public class ExpressionToolbox {
    public static Mutable<ILogicalExpression> findVariableExpression(Mutable<ILogicalExpression> mutableLe,
            LogicalVariable lv) {
        ILogicalExpression le = mutableLe.getValue();
        if (le.getExpressionTag() == LogicalExpressionTag.VARIABLE) {
            VariableReferenceExpression vre = (VariableReferenceExpression) le;
            if (vre.getVariableReference() == lv) {
                return mutableLe;
            }
        } else if (le.getExpressionTag() == LogicalExpressionTag.FUNCTION_CALL) {
            AbstractFunctionCallExpression afce = (AbstractFunctionCallExpression) le;
            for (Mutable<ILogicalExpression> argExp : afce.getArguments()) {
View Full Code Here
211
212
213
214
215
216
217
218
219
220
221
222
                // 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);
                if (variableProducer == null) {
                    return null;
                }
                AbstractLogicalOperator variableOp = (AbstractLogicalOperator) variableProducer.getValue();
View Full Code Here
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
        Mutable<ILogicalOperator> inputOperator = getInputOperator(assign.getInputs().get(0));
        NestedTupleSourceOperator ntsOperator = new NestedTupleSourceOperator(inputOperator);
        nextOperatorRef = new MutableObject<ILogicalOperator>(ntsOperator);

        // Get variable that is being used for sort and distinct operators.
        VariableReferenceExpression inputVariableRef = (VariableReferenceExpression) mutableVariableExpresion.getValue();
        LogicalVariable inputVariable = inputVariableRef.getVariableReference();

        // Unnest.
        LogicalVariable unnestVariable = context.newVar();
        UnnestOperator unnestOperator = getUnnestOperator(inputVariable, unnestVariable);
        unnestOperator.getInputs().add(nextOperatorRef);
        nextOperatorRef = new MutableObject<ILogicalOperator>(unnestOperator);

        // Aggregate.
        VariableReferenceExpression inputArg = new VariableReferenceExpression(unnestVariable);
        finalFunctionCall.getArguments().get(0).setValue(inputArg);
        Mutable<ILogicalExpression> aggregateArgs = functionCall.getArguments().get(0);

        LogicalVariable aggregateVariable = assign.getVariables().get(0);
        AggregateOperator aggregateOperator = getAggregateOperator(aggregateInfo, aggregateArgs, aggregateVariable);
View Full Code Here
185
186
187
188
189
190
191
192
193
194
195
                return opRef;
        }
    }

    private UnnestOperator getUnnestOperator(LogicalVariable inputVariable, LogicalVariable unnestVariable) {
        VariableReferenceExpression inputVre = new VariableReferenceExpression(inputVariable);

        List<Mutable<ILogicalExpression>> iterateArgs = new ArrayList<Mutable<ILogicalExpression>>();
        iterateArgs.add(new MutableObject<ILogicalExpression>(inputVre));

        ILogicalExpression unnestExp = new UnnestingFunctionCallExpression(BuiltinOperators.ITERATE, iterateArgs);
View Full Code Here
117
118
119
120
121
122
123
124
125
126
        LogicalVariable assignVariable = context.newVar();
        AssignOperator aOp = new AssignOperator(assignVariable, assignExpression);
        for (Mutable<ILogicalOperator> input : aggregate.getInputs()) {
            aOp.getInputs().add(input);
        }
        functionCall.getArguments().get(0).setValue(new VariableReferenceExpression(assignVariable));
        unnest.getInputs().get(0).setValue(aOp);

        return true;
    }
View Full Code Here
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
        Mutable<ILogicalOperator> inputOperator = getInputOperator(assign.getInputs().get(0));
        NestedTupleSourceOperator ntsOperator = new NestedTupleSourceOperator(inputOperator);
        nextOperatorRef = new MutableObject<ILogicalOperator>(ntsOperator);

        // Get variable that is being used for sort and distinct operators.
        VariableReferenceExpression inputVariableRef = (VariableReferenceExpression) functionCall.getArguments().get(0)
                .getValue();
        LogicalVariable inputVariable = inputVariableRef.getVariableReference();

        // Unnest.
        LogicalVariable unnestVariable = context.newVar();
        UnnestOperator unnestOperator = getUnnestOperator(inputVariable, unnestVariable);
        unnestOperator.getInputs().add(nextOperatorRef);
        nextOperatorRef = new MutableObject<ILogicalOperator>(unnestOperator);

        // Assign Node ID key.
        LogicalVariable nodeIdKeyVariable = context.newVar();
        AssignOperator nodeIdAssignOp = getAssignOperator(unnestVariable, nodeIdKeyVariable,
                BuiltinOperators.ID_FROM_NODE);
        nodeIdAssignOp.getInputs().add(nextOperatorRef);
        nextOperatorRef = new MutableObject<ILogicalOperator>(nodeIdAssignOp);

        // Prepare for Order and Distinct.
        Mutable<ILogicalExpression> nodeIdKeyVariableRef = new MutableObject<ILogicalExpression>(
                new VariableReferenceExpression(nodeIdKeyVariable));

        // Distinct.
        if (functionCall.getFunctionIdentifier().equals(
                BuiltinOperators.SORT_DISTINCT_NODES_ASC_OR_ATOMICS.getFunctionIdentifier())
                || functionCall.getFunctionIdentifier().equals(
                        BuiltinOperators.DISTINCT_NODES_OR_ATOMICS.getFunctionIdentifier())) {
            LogicalVariable groupByVariable = context.newVar();
            ILogicalExpression nodeIdKeyVre = new VariableReferenceExpression(nodeIdKeyVariable);
            GroupByOperator groupByOperator = getGroupByOperator(groupByVariable, nodeIdKeyVre);
            groupByOperator.getInputs().add(nextOperatorRef);
            nextOperatorRef = new MutableObject<ILogicalOperator>(groupByOperator);
        }
View Full Code Here
156
157
158
159
160
161
162
163
164
165
166
        List<LogicalVariable> aggregateVariables = new ArrayList<LogicalVariable>();
        aggregateVariables.add(aggregateVariable);

        List<Mutable<ILogicalExpression>> aggregateSequenceArgs = new ArrayList<Mutable<ILogicalExpression>>();
        Mutable<ILogicalExpression> unnestVariableRef = new MutableObject<ILogicalExpression>(
                new VariableReferenceExpression(unnestVariable));
        aggregateSequenceArgs.add(unnestVariableRef);
       
        List<Mutable<ILogicalExpression>> exprs = new ArrayList<Mutable<ILogicalExpression>>();
        ILogicalExpression aggregateExp = new AggregateFunctionCallExpression(BuiltinOperators.SEQUENCE, false,
                aggregateSequenceArgs);
View Full Code Here
171
172
173
174
175
176
177
178
179
180
    }

    private AssignOperator getAssignOperator(LogicalVariable unnestVariable, LogicalVariable outputVariable,
            IFunctionInfo inputFunction) {
        List<Mutable<ILogicalExpression>> nodeArgs = new ArrayList<Mutable<ILogicalExpression>>();
        nodeArgs.add(new MutableObject<ILogicalExpression>(new VariableReferenceExpression(unnestVariable)));
        ScalarFunctionCallExpression unctionExpression = new ScalarFunctionCallExpression(inputFunction, nodeArgs);
        Mutable<ILogicalExpression> nodeTreeIdExpression = new MutableObject<ILogicalExpression>(unctionExpression);
        return new AssignOperator(outputVariable, nodeTreeIdExpression);
    }
View Full Code Here
206
207
208
209
210
211
212
213
214
215
216
//        oo.setExecutionMode(AbstractLogicalOperator.ExecutionMode.LOCAL);
        return oo;
    }

    private UnnestOperator getUnnestOperator(LogicalVariable inputVariable, LogicalVariable unnestVariable) {
        VariableReferenceExpression inputVre = new VariableReferenceExpression(inputVariable);

        List<Mutable<ILogicalExpression>> iterateArgs = new ArrayList<Mutable<ILogicalExpression>>();
        iterateArgs.add(new MutableObject<ILogicalExpression>(inputVre));

        ILogicalExpression unnestExp = new UnnestingFunctionCallExpression(BuiltinOperators.ITERATE, iterateArgs);
View Full Code Here
TOP

Related Classes of edu.uci.ics.hyracks.algebricks.core.algebra.expressions.VariableReferenceExpression

  • org.apache.vxquery.compiler.algebricks.VXQueryExpressionRuntimeProvider
  • org.apache.vxquery.compiler.rewriter.rules.ConsolidateAssignAggregateRule
  • org.apache.vxquery.compiler.rewriter.rules.ConvertAssignSortDistinctNodesToOperatorsRule
  • org.apache.vxquery.compiler.rewriter.rules.ConvertAssignToAggregateRule
  • org.apache.vxquery.compiler.rewriter.rules.EliminateSubplanForSingleItemsRule
  • org.apache.vxquery.compiler.rewriter.rules.EliminateUnnestAggregateSequencesRule
  • org.apache.vxquery.compiler.rewriter.rules.EliminateUnnestAggregateSubplanRule
  • org.apache.vxquery.compiler.rewriter.rules.PushFunctionsOntoEqJoinBranches
  • org.apache.vxquery.compiler.rewriter.rules.RemoveUnusedSortDistinctNodesRule
  • org.apache.vxquery.compiler.rewriter.rules.RemoveUnusedTreatRule
    • Copyright © 2018 www.massapicom. All rights reserved.
    All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.