Examples of org.lilyproject.repository.api.Blob

org.lilyproject.repository.api.Blob
A Blob is a {@link ValueType value type} that can be used to store arbitrarily large binary data.Besides the binary data itself, a blob holds some metadata such as the media-type and size.
Storing and retrieving data to and from the blob happens through {@link java.io.OutputStream} and{@link java.io.InputStream}.
These streams are available via the Repository through {@link Repository#getOutputStream(Blob)} and{@link Repository#getInputStream(Blob)}.
Important: to add a blob to a record, you first need to upload the data via the OutputStream. Once finished, close the OutputStream using {@link java.io.OutputStream#close()}. This will trigger the update of the {@link #setValue value} of this blob object (which will usually be a pointer to the storage locationof the blob, though for tiny blobs -- sorry for the oxymoron -- this might be the binary data itself). Once that's done, you can store the {@link Record} itself. Thus: first upload all blobs and close theirOutputStreams, then save the record. It does not matter when the blob value is set on the record object itself.


        // TODO do we want the mediatype to include the parameters?
        String mediaType = headers.getMediaType().getType() + "/" + headers.getMediaType().getSubtype();


        long length = Long.parseLong(lengthHeader);
        Blob blob = new Blob(mediaType, length, null);


        if (length == 0 && is == null) {
            // Apparently when the length is 0, no InputStream is provided, therefore the following
            is = new NullInputStream(0);
        }

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        int min = 1;
        int max = sizes[0 + (int)(Math.random() * ((2 - 0) + 1))];
        int size = min + (int)(Math.random() * ((max - min) + 1));
        byte[] bytes = new byte[size];
        random.nextBytes(bytes);
        Blob blob = new Blob("tester", (long)bytes.length, "test"+size);
        try {
            OutputStream outputStream = table.getOutputStream(blob);
            outputStream.write(bytes);
            outputStream.close();
//            System.out.println("created blob of size "+size+" in "+ (System.currentTimeMillis()-start) +" ms");

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        String mediaType = JsonUtil.getString(node, "mediaType", null);
        long size = JsonUtil.getLong(node, "size");
        String name = JsonUtil.getString(node, "name", null);
        byte[] value = valueFromString(JsonUtil.getString(node, "value"));


        Blob blob = new Blob(mediaType, size, name);
        blob.setValue(value);


        return blob;
    }

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        for (int i = 0; i < types.length; i++) {
            FieldType blobField = typeManager
                    .createFieldType("BLOB", new QName("metadata-blob", "blob" + i), Scope.NON_VERSIONED);


            Blob blob = new Blob("text/plain", 5L, "foo");
            OutputStream os = repository.getOutputStream(blob);
            os.write("12345".getBytes());
            os.close();


            Record record = repository.newRecord();

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        } else if (name.equals("URI") || name.equals("DATETIME") || name.equals("DATE") || name.equals("LINK")) {
            result = factory.textNode(value.toString());
        } else if (name.equals("DECIMAL")) {
            result = factory.numberNode((BigDecimal)value);
        } else if (name.equals("BLOB")) {
            Blob blob = (Blob)value;
            result = BlobConverter.toJson(blob);
        } else if (name.equals("RECORD")){
            result = toJson((Record)value, options, namespaces, repository);
        } else if (name.equals("BYTEARRAY")) {
            result = factory.binaryNode(((ByteArray) value).getBytes());

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            throws BlobException {
        if (!(fieldType.getValueType().getDeepestValueType() instanceof BlobValueType)) {
            throw new BlobException("Cannot read a blob from a non-blob field type: " + fieldType.getName());
        }


        Blob blob = getBlobFromRecord(record, fieldName, fieldType, indexes);
        return registry.getBlobAccess(blob);
    }

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                    byte[] data = IOUtils.toByteArray(bodyDataStream);


                    // TODO could fill in filename
                    long startTime = System.nanoTime();
                    Blob blob = new Blob(mediaType, (long)data.length, null);
                    OutputStream os = table.getOutputStream(blob);
                    try {
                        IOUtils.write(data, os);
                    } finally {
                        os.close();

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        recordType.addFieldTypeEntry(fieldTypeEntry);
        recordType = typeManager.createRecordType(recordType);


        byte[] bytes = new byte[size];
        random.nextBytes(bytes);
        Blob blob = writeBlob(bytes, "aMediaType", "testUpdateMutableMultivalueBlob");


        byte[] bytes2 = new byte[size];
        random.nextBytes(bytes2);
        Blob blob2 = writeBlob(bytes2, "aMediaType", "testUpdateMutableMultivalueBlob2");


        byte[] bytes3 = new byte[size];
        random.nextBytes(bytes3);
        Blob blob3 = writeBlob(bytes3, "aMediaType", "testUpdateMutableMultivalueBlob3");


        byte[] bytes4 = new byte[size];
        random.nextBytes(bytes4);
        Blob blob4 = writeBlob(bytes4, "aMediaType", "testUpdateMutableMultivalueBlob4");


        Record record = repository.newRecord();
        record.setRecordType(recordType.getName(), null);
        record.setField(fieldName, Arrays.asList(blob, blob2));
        record = repository.create(record);

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        recordType.addFieldTypeEntry(fieldTypeEntry);
        recordType = typeManager.createRecordType(recordType);


        byte[] bytes = new byte[size];
        random.nextBytes(bytes);
        Blob blob = writeBlob(bytes, "aMediaType", "testUpdateMutableHierarchyBlob");


        byte[] bytes2 = new byte[size];
        random.nextBytes(bytes2);
        Blob blob2 = writeBlob(bytes2, "aMediaType", "testUpdateMutableHierarchyBlob2");


        byte[] bytes3 = new byte[size];
        random.nextBytes(bytes3);
        Blob blob3 = writeBlob(bytes3, "aMediaType", "testUpdateMutableHierarchyBlob3");


        byte[] bytes4 = new byte[size];
        random.nextBytes(bytes4);
        Blob blob4 = writeBlob(bytes4, "aMediaType", "testUpdateMutableHierarchyBlob4");


        Record record = repository.newRecord();
        record.setRecordType(recordType.getName(), null);
        record.setField(fieldName, new HierarchyPath(blob, blob2));
        record = repository.create(record);

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        recordType.addFieldTypeEntry(fieldTypeEntry);
        recordType = typeManager.createRecordType(recordType);


        byte[] bytes = new byte[size];
        random.nextBytes(bytes);
        Blob blob = writeBlob(bytes, "aMediaType", "testUpdateMutableMultivalueHierarchyBlob");


        byte[] bytes2 = new byte[size];
        random.nextBytes(bytes);
        Blob blob2 = writeBlob(bytes2, "aMediaType", "testUpdateMutableMultivalueHierarchyBlob2");


        byte[] bytes3 = new byte[size];
        random.nextBytes(bytes3);
        Blob blob3 = writeBlob(bytes3, "aMediaType", "testUpdateMutableMultivalueHierarchyBlob3");


        byte[] bytes4 = new byte[size];
        random.nextBytes(bytes4);
        Blob blob4 = writeBlob(bytes4, "aMediaType", "testUpdateMutableMultivalueHierarchyBlob4");


        Record record = repository.newRecord();
        record.setRecordType(recordType.getName(), null);
        record.setField(fieldName, Arrays.asList(new HierarchyPath(blob, blob2), new HierarchyPath(blob3)));
        record = repository.create(record);

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org.lilyproject.repository.impl.BlobManagerImpl

org.lilyproject.repository.impl.test.AbstractBlobStoreTest

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