Examples of org.apache.phoenix.schema.PColumn

org.apache.phoenix.schema.PColumn
Definition of a Phoenix column @since 0.1

        PhoenixConnection conn = context.getConnection();
        String tableName = index.getParentName().getString();
        PTable table = conn.getMetaDataCache().getTable(new PTableKey(conn.getTenantId(), tableName));
        PColumnFamily pfamily = table.getColumnFamily(cfName);
        for (PColumn column : pfamily.getColumns()) {
            PColumn indexColumn = index.getColumn(IndexUtil.getIndexColumnName(column));
            ColumnRef ref = new ColumnRef(tableRef, indexColumn.getPosition());
            Expression expression = ref.newColumnExpression();
            projectedExpressions.add(expression);
            String colName = column.getName().toString();
            boolean isCaseSensitive = !SchemaUtil.normalizeIdentifier(colName).equals(colName);
            projectedColumns.add(new ExpressionProjector(colName,

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                    int byteSize = column.getDataType().isFixedWidth() ? maxLength == null ? column.getDataType().getByteSize() : maxLength : RowKeySchema.ESTIMATED_VARIABLE_LENGTH_SIZE;
                    estimatedByteSize += SizedUtil.KEY_VALUE_SIZE + estimatedKeySize + byteSize;
                }
            } else {
                for (byte[] cq : entry.getValue()) {
                    PColumn column = family.getColumn(cq);
                    Integer maxLength = column.getMaxLength();
                    int byteSize = column.getDataType().isFixedWidth() ? maxLength == null ? column.getDataType().getByteSize() : maxLength : RowKeySchema.ESTIMATED_VARIABLE_LENGTH_SIZE;
                    estimatedByteSize += SizedUtil.KEY_VALUE_SIZE + estimatedKeySize + byteSize;
                }
            }
        }

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        int maxKeyLength = 0;
        // Calculate the max length of a key (each part must currently be of a fixed width)
        int i = 0;
        List<PColumn> columns = table.getPKColumns();
        while (i < columns.size()) {
            PColumn keyColumn = columns.get(i++);
            PDataType type = keyColumn.getDataType();
            Integer maxLength = keyColumn.getMaxLength();
            maxKeyLength += !type.isFixedWidth() ? VAR_LENGTH_ESTIMATE : maxLength == null ? type.getByteSize() : maxLength;
        }
        return maxKeyLength;
    }

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        }
        if (columnName==null) {
            throw new SQLException("columnName must not be null.");
        }
        columnName = columnName.trim().toUpperCase();
        PColumn pColumn = null;
        if (columnName.contains(QueryConstants.NAME_SEPARATOR)) {
            String[] tokens = columnName.split(QueryConstants.NAME_SEPARATOR_REGEX);
            if (tokens.length!=2) {
                throw new SQLException(String.format("Unable to process column %s, expected family-qualified name.",columnName));
            }

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    // does not confer to the schema, extends its length to match the schema.
    private static byte[] processSplit(byte[] split, LinkedHashSet<PColumn> pkColumns) {
        int pos = 0, offset = 0, maxOffset = split.length;
        Iterator<PColumn> iterator = pkColumns.iterator();
        while (pos < pkColumns.size()) {
            PColumn column = iterator.next();
            if (column.getDataType().isFixedWidth()) { // Fixed width
                int length = SchemaUtil.getFixedByteSize(column);
                if (maxOffset - offset < length) {
                    // The split truncates the field. Fill in the rest of the part and any fields that
                    // are missing after this field.
                    int fillInLength = length - (maxOffset - offset);

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    // Estimate the key length after pos slot for schema.
    private static int estimatePartLength(int pos, Iterator<PColumn> iterator) {
        int length = 0;
        while (iterator.hasNext()) {
            PColumn column = iterator.next();
            if (column.getDataType().isFixedWidth()) {
                length += SchemaUtil.getFixedByteSize(column);
            } else {
                length += 1; // SEPARATOR byte.
            }
        }

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        boolean isSalted = dataTable.getBucketNum() != null;
        boolean isMultiTenant = connection.getTenantId() != null && dataTable.isMultiTenant();
        boolean isSharedViewIndex = dataTable.getViewIndexId() != null;
        int posOffset = (isSalted ? 1 : 0) + (isMultiTenant ? 1 : 0) + (isSharedViewIndex ? 1 : 0);
        for (int i = posOffset; i < nColumns; i++) {
            PColumn col = dataTableColumns.get(i);
            String indexColName = IndexUtil.getIndexColumnName(col);
            try {
                indexTable.getColumn(indexColName);
                if (col.getFamilyName() != null) {
                    dataColumns.append('"').append(col.getFamilyName()).append("\".");
                }
                dataColumns.append('"').append(col.getName()).append("\",");
                indexColumns.append('"').append(indexColName).append("\",");
            } catch (ColumnNotFoundException e) {
                // Catch and ignore - means that this data column is not in the index
            }
        }

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                List<AliasedNode> aliasedNodes = Lists.newArrayListWithExpectedSize(table.getPKColumns().size());
                boolean isSalted = table.getBucketNum() != null;
                boolean isMultiTenant = connection.getTenantId() != null && table.isMultiTenant();
                boolean isSharedViewIndex = table.getViewIndexId() != null;
                for (int i = (isSalted ? 1 : 0) + (isMultiTenant ? 1 : 0) + (isSharedViewIndex ? 1 : 0); i < table.getPKColumns().size(); i++) {
                    PColumn column = table.getPKColumns().get(i);
                    aliasedNodes.add(FACTORY.aliasedNode(null, FACTORY.column(null, '"' + column.getName().getString() + '"', null)));
                }
                select = FACTORY.select(
                        Collections.singletonList(delete.getTable()), 
                        hint, false, aliasedNodes, delete.getWhere(), 
                        Collections.<ParseNode>emptyList(), null,

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        Integer arraySize = arraySizeKv == null ? null : PDataType.INTEGER.getCodec().decodeInt(arraySizeKv.getBuffer(), arraySizeKv.getValueOffset(), SortOrder.getDefault());
        KeyValue viewConstantKv = colKeyValues[VIEW_CONSTANT_INDEX];
        byte[] viewConstant = viewConstantKv == null ? null : viewConstantKv.getValue();
        KeyValue isViewReferencedKv = colKeyValues[IS_VIEW_REFERENCED_INDEX];
        boolean isViewReferenced = isViewReferencedKv != null && Boolean.TRUE.equals(PDataType.BOOLEAN.toObject(isViewReferencedKv.getBuffer(), isViewReferencedKv.getValueOffset(), isViewReferencedKv.getValueLength()));
        PColumn column = new PColumnImpl(colName, famName, dataType, maxLength, scale, isNullable, position-1, sortOrder, arraySize, viewConstant, isViewReferenced);
        columns.add(column);
    }

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                        byte[] key = m.getRow();
                        int pkCount = getVarChars(key, rowKeyMetaData);
                        if (pkCount > COLUMN_NAME_INDEX 
                                && Bytes.compareTo(schemaName, rowKeyMetaData[SCHEMA_NAME_INDEX]) == 0 
                                && Bytes.compareTo(tableName, rowKeyMetaData[TABLE_NAME_INDEX]) == 0 ) {
                            PColumn columnToDelete = null;
                            try {
                                if (pkCount > FAMILY_NAME_INDEX && rowKeyMetaData[PhoenixDatabaseMetaData.FAMILY_NAME_INDEX].length > 0) {
                                    PColumnFamily family = table.getColumnFamily(rowKeyMetaData[PhoenixDatabaseMetaData.FAMILY_NAME_INDEX]);
                                    columnToDelete = family.getColumn(rowKeyMetaData[PhoenixDatabaseMetaData.COLUMN_NAME_INDEX]);
                                } else if (pkCount > COLUMN_NAME_INDEX && rowKeyMetaData[PhoenixDatabaseMetaData.COLUMN_NAME_INDEX].length > 0) {
                                    deletePKColumn = true;
                                    columnToDelete = table.getPKColumn(new String(rowKeyMetaData[PhoenixDatabaseMetaData.COLUMN_NAME_INDEX]));
                                } else {
                                    continue;
                                }
                                if (columnToDelete.isViewReferenced()) { // Disallow deletion of column referenced in WHERE clause of view
                                    return new MetaDataMutationResult(MutationCode.UNALLOWED_TABLE_MUTATION, EnvironmentEdgeManager.currentTimeMillis(), table, columnToDelete);
                                }
                                // Look for columnToDelete in any indexes. If found as PK column, get lock and drop the index. If found as covered column, delete from index (do this client side?).
                                // In either case, invalidate index if the column is in it
                                for (PTable index : table.getIndexes()) {
                                    try {
                                        String indexColumnName = IndexUtil.getIndexColumnName(columnToDelete);
                                        PColumn indexColumn = index.getColumn(indexColumnName);
                                        byte[] indexKey = SchemaUtil.getTableKey(tenantId, index.getSchemaName().getBytes(), index.getTableName().getBytes());
                                        // If index contains the column in it's PK, then drop it
                                        if (SchemaUtil.isPKColumn(indexColumn)) {
                                            // Since we're dropping the index, lock it to ensure that a change in index state doesn't
                                            // occur while we're dropping it.

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