Examples of com.salesforce.phoenix.schema.ColumnRef

com.salesforce.phoenix.schema.ColumnRef
Class that represents a reference to a PColumn in a PTable @author jtaylor @since 0.1

            this.columnRefMap.clear();
        }
        
        @Override
        public Void visit(ColumnParseNode node) throws SQLException {
            ColumnRef columnRef = resolver.resolveColumn(node.getSchemaName(), node.getTableName(), node.getName());
            columnRefMap.put(columnRef, node);
            tableRefSet.add(columnRef.getTableRef());
            return null;                
        }

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        String colName) throws SQLException {
      String name = getProjectedColumnName(schemaName, tableName, colName);
      TableRef tableRef = tableRefs.get(0);
      try {
        PColumn column = tableRef.getTable().getColumn(name);
        return new ColumnRef(tableRef, column.getPosition());
      } catch (ColumnNotFoundException e) {
        List<String> names = table.getMappedColumnName(name);
        if (names.size() == 1) {
          PColumn column = tableRef.getTable().getColumn(names.get(0));
          return new ColumnRef(tableRef, column.getPosition());          
        }
        
        if (names.size() > 1) {
          throw new AmbiguousColumnException(name);
        }

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            return true;
        }


        @Override
        public Void visit(ColumnParseNode node) throws SQLException {
            ColumnRef ref = context.getResolver().resolveColumn(node.getSchemaName(), node.getTableName(), node.getName());
            boolean isAggregateColumn = groupBy.getExpressions().indexOf(ref.newColumnExpression()) >= 0;
            if (hasOnlyAggregateColumns == null) {
                hasOnlyAggregateColumns = isAggregateColumn;
            } else {
                hasOnlyAggregateColumns &= isAggregateColumn;
            }

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            super(context);
        }


        @Override
        protected ColumnRef resolveColumn(ColumnParseNode node) throws SQLException {
            ColumnRef ref = super.resolveColumn(node);
            PTable table = ref.getTable();
            // Track if we need to compare KeyValue during filter evaluation
            // using column family. If the column qualifier is enough, we
            // just use that.
            try {
                if (!SchemaUtil.isPKColumn(ref.getColumn())) {
                    table.getColumn(ref.getColumn().getName().getString());
                }
            } catch (AmbiguousColumnException e) {
                disambiguateWithFamily = true;
            }
            return ref;

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                      column, tableRef, PNameFactory.newName(ScanProjector.VALUE_COLUMN_FAMILY), hasSaltingColumn);
                }
              }
            } else {
                for (Map.Entry<ColumnRef, ColumnRefType> e : columnRefs.entrySet()) {
                    ColumnRef columnRef = e.getKey();
                    if (e.getValue() != ColumnRefType.PREFILTER 
                            && columnRef.getTableRef().equals(tableRef)
                            && (!retainPKColumns || !SchemaUtil.isPKColumn(columnRef.getColumn()))) {
                      PColumn column = columnRef.getColumn();
                  addProjectedColumn(projectedColumns, sourceExpressions, columnNameMap,
                      column, tableRef, PNameFactory.newName(ScanProjector.VALUE_COLUMN_FAMILY), hasSaltingColumn);
                    }
                }              
            }

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          }
            columnNameMap.put(colName.getString(), name.getString());
        PColumnImpl column = new PColumnImpl(name, familyName, sourceColumn.getDataType(), 
            sourceColumn.getMaxLength(), sourceColumn.getScale(), sourceColumn.isNullable(), 
            position, sourceColumn.getColumnModifier());
          Expression sourceExpression = new ColumnRef(sourceTable, sourceColumn.getPosition()).newColumnExpression();
          projectedColumns.add(column);
          sourceExpressions.add(sourceExpression);
        }

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      }
          PColumn column = resolveCF
                  ? tableRef.getTable().getColumnFamily(tableName).getColumn(colName)
              : tableRef.getTable().getColumn(colName);
            return new ColumnRef(tableRef, column.getPosition());
    }

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                        theColumnPosition = column.getPosition();
                    } catch (ColumnNotFoundException e) {


                    }
                }
                if (theTableRef != null) { return new ColumnRef(theTableRef, theColumnPosition); }
                throw new ColumnNotFoundException(colName);
            } else {
                try {
                    TableRef tableRef = resolveTable(schemaName, tableName);
                    PColumn column = tableRef.getTable().getColumn(colName);
                    return new ColumnRef(tableRef, column.getPosition());
                } catch (TableNotFoundException e) {
                    // Try using the tableName as a columnFamily reference instead
                    ColumnFamilyRef cfRef = resolveColumnFamily(schemaName, tableName);
                    PColumn column = cfRef.getFamily().getColumn(colName);
                    return new ColumnRef(cfRef.getTableRef(), column.getPosition());
                }
            }
        }

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        return rewrite(statement, new IndexStatementRewriter(dataResolver, multiTableRewriteMap));
    }


    @Override
    public ParseNode visit(ColumnParseNode node) throws SQLException {
        ColumnRef dataColRef = getResolver().resolveColumn(node.getSchemaName(), node.getTableName(), node.getName());
        TableName tName = null;
        if (multiTableRewriteMap != null) {
            TableRef origRef = dataColRef.getTableRef();
            TableRef tableRef = multiTableRewriteMap.get(origRef);
            if (tableRef == null)
                return node;
            
            if (origRef.getTableAlias() != null) {
                tName = FACTORY.table(null, origRef.getTableAlias());
            } else {
                String schemaName = tableRef.getTable().getSchemaName().getString();
                schemaName = schemaName.length() == 0 ? null : '"' + schemaName + '"';
                String tableName = '"' + tableRef.getTable().getTableName().getString() + '"';
                tName = FACTORY.table(schemaName, tableName);
            }
        }
        String indexColName = IndexUtil.getIndexColumnName(dataColRef.getColumn());
        // Same alias as before, but use the index column name instead of the data column name
        ParseNode indexColNode = new ColumnParseNode(tName, indexColName, node.getAlias());
        PDataType indexColType = IndexUtil.getIndexColumnDataType(dataColRef.getColumn());
        PDataType dataColType = dataColRef.getColumn().getDataType();


        // Coerce index column reference back to same type as data column so that
        // expression behave exactly the same. No need to invert, as this will be done
        // automatically as needed. If node is used at the top level, do not convert, as
        // otherwise the wrapper gets in the way in the group by clause. For example,

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                            @Override
                            public ColumnRef resolveColumn(String schemaName, String tableName, String colName) throws SQLException {
                                PColumn column = tableName != null
                                        ? tableRef.getTable().getColumnFamily(tableName).getColumn(colName)
                                        : tableRef.getTable().getColumn(colName);
                                return new ColumnRef(tableRef, column.getPosition());
                            }
                        };
                        StatementContext context = new StatementContext(new PhoenixStatement(connection), resolver, Collections.<Object>emptyList(), scan);
                        ScanUtil.setTimeRange(scan, timestamp);
                        if (emptyCF != null) {

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Related Classes of com.salesforce.phoenix.schema.ColumnRef

com.salesforce.phoenix.compile.ExpressionCompiler

com.salesforce.phoenix.compile.FromCompiler$MultiTableColumnResolver

com.salesforce.phoenix.compile.FromCompiler$SingleTableColumnResolver

com.salesforce.phoenix.compile.HavingCompiler$HavingClauseVisitor

com.salesforce.phoenix.compile.IndexStatementRewriter

com.salesforce.phoenix.compile.JoinCompiler$ColumnParseNodeVisitor

com.salesforce.phoenix.compile.JoinCompiler$JoinedTableColumnResolver

com.salesforce.phoenix.compile.JoinCompiler$JoinSpec

com.salesforce.phoenix.compile.PostDDLCompiler

com.salesforce.phoenix.compile.ProjectionCompiler

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