INT-3280 Fix SFTP Class Tangle

JIRA: https://jira.springsource.org/browse/INT-3280

spring-integration-sftp/src/main/java/org/springframework/integration/sftp/session/DefaultSftpSessionFactory.java

@@ -17,7 +17,6 @@
 package org.springframework.integration.sftp.session;
 
 import java.util.Properties;
-import java.util.concurrent.atomic.AtomicInteger;
 import java.util.concurrent.locks.ReentrantReadWriteLock;
 
 import org.springframework.beans.factory.BeanCreationException;
@@ -436,38 +435,4 @@ public class DefaultSftpSessionFactory implements SessionFactory<LsEntry>, Share
 		}
 	}
 
-	/**
-	 * A wrapper for a JSch session that maintains a channel count and
-	 * physically disconnects when the last channel is closed.
-	 *
-	 */
-	public class JSchSessionWrapper {
-
-		private final com.jcraft.jsch.Session session;
-
-		private final AtomicInteger channels = new AtomicInteger();
-
-		JSchSessionWrapper(com.jcraft.jsch.Session session) {
-			this.session = session;
-		}
-
-		public void addChannel() {
-			this.channels.incrementAndGet();
-		}
-
-		public void close() {
-			if (channels.decrementAndGet() <= 0) {
-				this.session.disconnect();
-			}
-		}
-
-		public final com.jcraft.jsch.Session getSession() {
-			return session;
-		}
-
-		public boolean isConnected() {
-			return session.isConnected();
-		}
-
-	}
 }

spring-integration-sftp/src/main/java/org/springframework/integration/sftp/session/JSchSessionWrapper.java

@@ -0,0 +1,58 @@
+/*
+ * Copyright 2014 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.springframework.integration.sftp.session;
+
+import java.util.concurrent.atomic.AtomicInteger;
+
+import com.jcraft.jsch.Session;
+
+/**
+ * A wrapper for a JSch session that maintains a channel count and
+ * physically disconnects when the last channel is closed.
+ *
+ * @author Gary Russell
+ * @since 3.0
+ *
+ */
+class JSchSessionWrapper {
+
+	private final Session session;
+
+	private final AtomicInteger channels = new AtomicInteger();
+
+	JSchSessionWrapper(Session session) {
+		this.session = session;
+	}
+
+	public void addChannel() {
+		this.channels.incrementAndGet();
+	}
+
+	public void close() {
+		if (channels.decrementAndGet() <= 0) {
+			this.session.disconnect();
+		}
+	}
+
+	public final Session getSession() {
+		return session;
+	}
+
+	public boolean isConnected() {
+		return session.isConnected();
+	}
+
+}

spring-integration-sftp/src/main/java/org/springframework/integration/sftp/session/SftpSession.java

@@ -28,7 +28,6 @@ import org.apache.commons.logging.LogFactory;
 
 import org.springframework.core.NestedIOException;
 import org.springframework.integration.file.remote.session.Session;
-import org.springframework.integration.sftp.session.DefaultSftpSessionFactory.JSchSessionWrapper;
 import org.springframework.util.Assert;
 import org.springframework.util.FileCopyUtils;
 
@@ -67,7 +66,7 @@ class SftpSession implements Session<LsEntry> {
 		this.wrapper = null;
 	}
 
-	public SftpSession(DefaultSftpSessionFactory.JSchSessionWrapper wrapper) {
+	public SftpSession(JSchSessionWrapper wrapper) {
 		Assert.notNull(wrapper, "wrapper must not be null");
 		this.jschSession = wrapper.getSession();
 		this.wrapper = wrapper;