Examples with Path org.apache.hbase.thirdparty.javax.ws.rs.Path used on opensource projects

Example 1 with Path

use of org.apache.hbase.thirdparty.javax.ws.rs.Path in project hbase by apache.

the class TableResource method getScanResource.

@Path("{scanspec: .*[*]$}")
public TableScanResource getScanResource(@PathParam("scanspec") final String scanSpec, @DefaultValue(Integer.MAX_VALUE + "") @QueryParam(Constants.SCAN_LIMIT) int userRequestedLimit, @DefaultValue("") @QueryParam(Constants.SCAN_START_ROW) String startRow, @DefaultValue("") @QueryParam(Constants.SCAN_END_ROW) String endRow, @QueryParam(Constants.SCAN_COLUMN) List<String> column, @DefaultValue("1") @QueryParam(Constants.SCAN_MAX_VERSIONS) int maxVersions, @DefaultValue("-1") @QueryParam(Constants.SCAN_BATCH_SIZE) int batchSize, @DefaultValue("0") @QueryParam(Constants.SCAN_START_TIME) long startTime, @DefaultValue(Long.MAX_VALUE + "") @QueryParam(Constants.SCAN_END_TIME) long endTime, @DefaultValue("true") @QueryParam(Constants.SCAN_CACHE_BLOCKS) boolean cacheBlocks, @DefaultValue("false") @QueryParam(Constants.SCAN_REVERSED) boolean reversed, @DefaultValue("") @QueryParam(Constants.SCAN_FILTER) String paramFilter) {
    try {
        Filter prefixFilter = null;
        Scan tableScan = new Scan();
        if (scanSpec.indexOf('*') > 0) {
            String prefix = scanSpec.substring(0, scanSpec.indexOf('*'));
            byte[] prefixBytes = Bytes.toBytes(prefix);
            prefixFilter = new PrefixFilter(Bytes.toBytes(prefix));
            if (startRow.isEmpty()) {
                tableScan.withStartRow(prefixBytes);
            }
        }
        if (LOG.isTraceEnabled()) {
            LOG.trace("Query parameters  : Table Name = > " + this.table + " Start Row => " + startRow + " End Row => " + endRow + " Columns => " + column + " Start Time => " + startTime + " End Time => " + endTime + " Cache Blocks => " + cacheBlocks + " Max Versions => " + maxVersions + " Batch Size => " + batchSize);
        }
        Table hTable = RESTServlet.getInstance().getTable(this.table);
        tableScan.setBatch(batchSize);
        tableScan.readVersions(maxVersions);
        tableScan.setTimeRange(startTime, endTime);
        if (!startRow.isEmpty()) {
            tableScan.withStartRow(Bytes.toBytes(startRow));
        }
        tableScan.withStopRow(Bytes.toBytes(endRow));
        for (String col : column) {
            byte[][] parts = CellUtil.parseColumn(Bytes.toBytes(col.trim()));
            if (parts.length == 1) {
                if (LOG.isTraceEnabled()) {
                    LOG.trace("Scan family : " + Bytes.toStringBinary(parts[0]));
                }
                tableScan.addFamily(parts[0]);
            } else if (parts.length == 2) {
                if (LOG.isTraceEnabled()) {
                    LOG.trace("Scan family and column : " + Bytes.toStringBinary(parts[0]) + "  " + Bytes.toStringBinary(parts[1]));
                }
                tableScan.addColumn(parts[0], parts[1]);
            } else {
                throw new IllegalArgumentException("Invalid column specifier.");
            }
        }
        FilterList filterList = new FilterList();
        if (StringUtils.isNotEmpty(paramFilter)) {
            ParseFilter pf = new ParseFilter();
            Filter parsedParamFilter = pf.parseFilterString(paramFilter);
            if (parsedParamFilter != null) {
                filterList.addFilter(parsedParamFilter);
            }
            if (prefixFilter != null) {
                filterList.addFilter(prefixFilter);
            }
        }
        if (filterList.size() > 0) {
            tableScan.setFilter(filterList);
        }
        int fetchSize = this.servlet.getConfiguration().getInt(Constants.SCAN_FETCH_SIZE, 10);
        tableScan.setCaching(fetchSize);
        tableScan.setReversed(reversed);
        tableScan.setCacheBlocks(cacheBlocks);
        return new TableScanResource(hTable.getScanner(tableScan), userRequestedLimit);
    } catch (IOException exp) {
        servlet.getMetrics().incrementFailedScanRequests(1);
        processException(exp);
        LOG.warn(exp.toString(), exp);
        return null;
    }
}