| /**
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| * Copyright (c) 2013-2016 Angelo ZERR.
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| * All rights reserved. This program and the accompanying materials
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| * are made available under the terms of the Eclipse Public License 2.0
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| * which accompanies this distribution, and is available at
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| * https://www.eclipse.org/legal/epl-2.0/
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| *
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| * SPDX-License-Identifier: EPL-2.0
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| *
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| * Contributors:
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| * Angelo Zerr <angelo.zerr@gmail.com> - initial API and implementation
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| */ |
| package org.eclipse.wst.json.schemaprocessor.internal;
|
|
|
| import java.io.File;
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| import java.io.FileInputStream;
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| import java.io.IOException;
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| import java.io.InputStream;
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| import java.io.InputStreamReader;
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| import java.net.URL;
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| import java.util.LinkedHashMap;
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| import java.util.Map;
|
|
|
| import org.eclipse.json.impl.schema.JSONSchemaDocument;
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| import org.eclipse.json.schema.IJSONSchemaDocument;
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| import org.eclipse.json.schema.IJSONSchemaProcessor;
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| import org.eclipse.wst.json.core.internal.download.HttpClientProvider;
|
|
|
| public class JSONSchemaProcessor implements IJSONSchemaProcessor {
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|
|
| private static final int MAP_SIZE = 10;
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| private static Map<String,IJSONSchemaDocument> schemaDocuments = new LinkedHashMap<String, IJSONSchemaDocument>();
|
|
|
| @Override
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| public IJSONSchemaDocument getSchema(String uriString) throws IOException {
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| IJSONSchemaDocument schemaDocument = schemaDocuments.get(uriString);
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| if (schemaDocument != null) {
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| return schemaDocument;
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| }
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| int size = schemaDocuments.size();
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| if (size > MAP_SIZE) {
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| String key = schemaDocuments.keySet().iterator().next();
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| schemaDocuments.remove(key);
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| }
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| URL url = new URL(uriString);
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| InputStream is = null;
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| try {
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| if ("jar".equals(url.getProtocol())) {
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| is = url.openStream();
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| } else {
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| File f = HttpClientProvider.getFile(url);
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| if (f != null) {
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| is = new FileInputStream(f);
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| }
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| }
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| if (is != null) {
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| schemaDocument = new JSONSchemaDocument(new InputStreamReader(is));
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| }
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| } finally {
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| if (is != null) {
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| is.close();
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| }
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| }
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| if (schemaDocument != null) {
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| schemaDocuments.put(uriString, schemaDocument);
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| }
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| return schemaDocument;
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| }
|
|
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| public static void clearCache() {
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| schemaDocuments.clear();
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| }
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|
|
| }
|
