core/plugins/org.eclipse.dltk.core/model/org/eclipse/dltk/core/caching/IContentCache.java

package org.eclipse.dltk.core.caching;

import java.io.File;
import java.io.InputStream;
import java.io.OutputStream;

import org.eclipse.dltk.core.environment.IFileHandle;

public interface IContentCache {

	String STRUCTURE_INDEX = "_sind";
	String MIXIN_INDEX = "_smix";
	String CONTENT_INDEX = "content";
	String VALID_ATTRIBUTE = "valid";

	/*
	 * Methods to store content attributes
	 */
	public InputStream getCacheEntryAttribute(IFileHandle handle,
			String attribute);

	/**
	 * @since 2.0
	 */
	public InputStream getCacheEntryAttribute(IFileHandle handle,
			String attribute, boolean localonly);

	public OutputStream getCacheEntryAttributeOutputStream(IFileHandle handle,
			String attribute);

	public String getCacheEntryAttributeString(IFileHandle handle,
			String attribute);

	/**
	 * @since 2.0
	 */
	public String getCacheEntryAttributeString(IFileHandle handle,
			String attribute, boolean localonly);

	public boolean setCacheEntryAttribute(IFileHandle handle, String attribute,
			String value);

	public void removeCacheEntryAttributes(IFileHandle handle, String attribute);

	public void clearCacheEntryAttributes(IFileHandle handle);

	public File getEntryAsFile(IFileHandle handle, String attribute);

	public void clear();

	public boolean setCacheEntryAttribute(IFileHandle entryHandle,
			String attribute, long timestamp);

	public long getCacheEntryAttributeLong(IFileHandle entryHandle,
			String attribute);

	/**
	 * @since 2.0
	 */
	public long getCacheEntryAttributeLong(IFileHandle entryHandle,
			String attribute, boolean localonly);

	/**
	 * @since 2.0
	 */
	public void updateFolderTimestamps(IFileHandle parent);
}