Java DocumentWriter类代码示例

import org.modeshape.jcr.federation.spi.DocumentWriter; //导入依赖的package包/类
private DocumentWriter newFolderWriter(final String id, final File file,
    final int offset) {
    final boolean root = isRoot(id);
    final DocumentWriter writer = newDocument(id);
    writer.setPrimaryType(NT_FOLDER);
    writer.addProperty(JCR_CREATED, factories().getDateFactory().create(
        file.lastModified()));
    writer.addProperty(JCR_CREATED_BY, null); // ignored
    final File[] children = file.listFiles(filenameFilter);
    long totalChildren = 0;
    int nextOffset = 0;
    for (int i = 0; i < children.length; i++) {
        final File child = children[i];
        // Only include as a child if we can access and read the file.
        // Permissions might prevent us from reading the file, and the file
        // might not exist if it is a broken symlink
        // (see MODE-1768 for details).
        if (child.exists() && child.canRead() &&
            (child.isFile() || child.isDirectory())) {
            // we need to count the total accessible children
            totalChildren++;
            // only add a child if it's in the current page
            if (i >= offset && i < offset + pageSize) {
                // We use identifiers that contain the file/directory name
                final String childName = child.getName();
                final String childId =
                    root ? DELIMITER + childName : id + DELIMITER +
                        childName;
                writer.addChild(childId, childName);
                nextOffset = i + 1;
            }
        }
    }
    // if there are still accessible children add the next page
    if (nextOffset < totalChildren) {
        writer.addPage(id, nextOffset, pageSize, totalChildren);
    }
    return writer;
}
 

import org.modeshape.jcr.federation.spi.DocumentWriter; //导入依赖的package包/类
/**
 * Returns a {@link Document} instance representing the document with a
 * given id. The document should have a "proper" structure for it to be
 * usable by ModeShape.
 * 
 * @param id a {@code non-null} string
 * @return either an {@link Document} instance or {@code null}
 */
@Override
public Document getDocumentById(final String id) {
    final File file = fileFor(id);
    if (isExcluded(file) || !file.exists()) {
        return null;
    }
    final boolean isRoot = isRoot(id);
    final boolean isResource = isContentNode(id);
    DocumentWriter writer = null;
    File parentFile = file.getParentFile();
    if (isResource) {
        writer = newDocument(id);
        final BinaryValue binaryValue = binaryFor(file);
        writer.setPrimaryType(NT_RESOURCE);
        writer.addProperty(JCR_DATA, binaryValue);
        if (addMimeTypeMixin) {
            String mimeType = null;
            final String encoding = null; // We don't really know this
            try {
                mimeType = binaryValue.getMimeType();
            } catch (final Throwable e) {
                getLogger().error(e, JcrI18n.couldNotGetMimeType,
                    getSourceName(), id, e.getMessage());
            }
            writer.addProperty(JCR_ENCODING, encoding);
            writer.addProperty(JCR_MIME_TYPE, mimeType);
        }
        writer.addProperty(JCR_LAST_MODIFIED, factories().getDateFactory()
            .create(file.lastModified()));
        writer.addProperty(JCR_LAST_MODIFIED_BY, null); // ignored

        // make these binary not queryable. If we really want to query them,
        // we need to switch to external binaries
        writer.setNotQueryable();
        parentFile = file;
    } else if (file.isFile()) {
        writer = newDocument(id);
        writer.setPrimaryType(NT_FILE);
        writer.addProperty(JCR_CREATED, factories().getDateFactory()
            .create(file.lastModified()));
        writer.addProperty(JCR_CREATED_BY, null); // ignored
        final String childId =
            isRoot ? JCR_CONTENT_SUFFIX : id + JCR_CONTENT_SUFFIX;
        writer.addChild(childId, JCR_CONTENT);
    } else {
        writer = newFolderWriter(id, file, 0);
    }

    if (!isRoot) {
        // Set the reference to the parent ...
        final String parentId = idFor(parentFile);
        writer.setParents(parentId);
    }

    // Add the extra properties (if there are any), overwriting any
    // properties with the same names
    // (e.g., jcr:primaryType, jcr:mixinTypes, jcr:mimeType, etc.) ...
    writer.addProperties(extraPropertiesStore().getProperties(id));

    // Add the 'mix:mixinType' mixin; if other mixins are stored in the
    // extra properties, this will append ...
    if (addMimeTypeMixin) {
        writer.addMixinType(MIX_MIME_TYPE);
    }

    // Return the document ...
    return writer.document();
}
 

import org.modeshape.jcr.federation.spi.DocumentWriter; //导入依赖的package包/类
/**
 * Get the default document writer
 * 
 * @param id
 * @return
 */
protected DocumentWriter newDocumentWriter(final String id) {
	return super.newDocument(id);
}