Examples of org.apache.pig.backend.datastorage.DataStorage.asElement()

Package org.apache.pig.backend.datastorage

Class org.apache.pig.backend.datastorage.DataStorage

Examples of org.apache.pig.backend.datastorage.DataStorage.asElement()

org.apache.pig.backend.datastorage.DataStorage.asElement()
Creates an entity handle for an object (no containment relation) from a String @param name of the object @return an object descriptor @throws DataStorageException if name does not conform to naming convention enforced by the Data Storage.


    @Override
    public void storeSchema(ResourceSchema schema, String location, Job job) throws IOException {
        Configuration conf = job.getConfiguration();
        DataStorage storage = new HDataStorage(ConfigurationUtil.toProperties(conf));
        ElementDescriptor schemaFilePath = storage.asElement(location, schemaFileName);
        if(!schemaFilePath.exists() && schema != null) {
            try {
                new ObjectMapper().writeValue(schemaFilePath.create(), schema);
            } catch (JsonGenerationException e) {
                log.warn("Unable to write Resource Statistics for "+location);

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                log.warn("Unable to write Resource Statistics for "+location);
                e.printStackTrace();
            }
        }
        if (printHeaders) {
            ElementDescriptor headerFilePath = storage.asElement(location, headerFileName);
            if (!headerFilePath.exists()) {
                OutputStream os = headerFilePath.create();
                try {
                    String[] names = schema.fieldNames();

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        ElementDescriptor srcElement = null;
        ElementDescriptor dstElement = null;


        try {
            srcElement = dfs.asElement(src);
            dstElement = dstStorage.asElement(dst);
        }
        catch (DataStorageException e) {
            byte errSrc = getErrorSource();            
            int errCode = 0;
            switch(errSrc) {

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     * @return length of the file in bytes
     * @throws IOException
     */
    public long fileSize(String filename) throws IOException {
        DataStorage dfs = pigContext.getDfs();
        ElementDescriptor elem = dfs.asElement(filename);
        Map<String, Object> stats = elem.getStatistics();
        long length = (Long) stats.get(ElementDescriptor.LENGTH_KEY);
        int replication = (Short) stats
                .get(ElementDescriptor.BLOCK_REPLICATION_KEY);

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    }


    public static InputStream openDFSFile(String fileName, Properties properties) throws IOException{
        DataStorage dds = new HDataStorage(properties);
        ElementDescriptor elem = dds.asElement(fileName);
        return openDFSFile(elem);
    }
    
    public static long getSize(String fileName) throws IOException {
      Configuration conf = PigMapReduce.sJobConf;

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        return getSize(fileName, ConfigurationUtil.toProperties(conf));
    }
    
    public static long getSize(String fileName, Properties properties) throws IOException {
      DataStorage dds = new HDataStorage(properties);
        ElementDescriptor elem = dds.asElement(fileName);
       
        // recursively get all the files under this path
        ElementDescriptor[] allElems = getFileElementDescriptors(elem);
        
        long size = 0;

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        List<ElementDescriptor> filePaths = new ArrayList<ElementDescriptor>();
        for (int m = 0; m < elems.length; m++) {
            paths.add(elems[m]);
        }
        for (int j = 0; j < paths.size(); j++) {
            ElementDescriptor fullPath = store.asElement(store
                    .getActiveContainer(), paths.get(j));
            // Skip hadoop's private/meta files ...
            if (fullPath.systemElement()) {
                continue;
            }

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     * @return length of the file in bytes
     * @throws IOException
     */
    public long fileSize(String filename) throws IOException {
        DataStorage dfs = pigContext.getDfs();
        ElementDescriptor elem = dfs.asElement(filename);
        Map<String, Object> stats = elem.getStatistics();
        long length = (Long) stats.get(ElementDescriptor.LENGTH_KEY);
        int replication = (Short) stats
                .get(ElementDescriptor.BLOCK_REPLICATION_KEY);

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        ElementDescriptor srcElement = null;
        ElementDescriptor dstElement = null;


        try {
            srcElement = dfs.asElement(src);
            dstElement = dstStorage.asElement(dst);
        }
        catch (DataStorageException e) {
            byte errSrc = getErrorSource();            
            int errCode = 0;
            switch(errSrc) {

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    }


    public static InputStream openDFSFile(String fileName, Properties properties) throws IOException{
        DataStorage dds = new HDataStorage(properties);
        ElementDescriptor elem = dds.asElement(fileName);
        return openDFSFile(elem);
    }
    
    public static long getSize(String fileName) throws IOException {
      Configuration conf = PigMapReduce.sJobConf;

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