Java tutorial
/** * Licensed to JumpMind Inc under one or more contributor * license agreements. See the NOTICE file distributed * with this work for additional information regarding * copyright ownership. JumpMind Inc licenses this file * to you under the GNU General Public License, version 3.0 (GPLv3) * (the "License"); you may not use this file except in compliance * with the License. * * You should have received a copy of the GNU General Public License, * version 3.0 (GPLv3) along with this library; if not, see * <http://www.gnu.org/licenses/>. * * 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.jumpmind.symmetric.model; import java.io.File; import java.io.FileNotFoundException; import java.io.IOException; import java.io.Serializable; import java.util.Date; import org.apache.commons.io.FileUtils; import org.apache.commons.lang.StringUtils; import org.jumpmind.exception.IoException; public class FileSnapshot implements Serializable { private static final long serialVersionUID = 1L; public enum LastEventType { CREATE("C"), MODIFY("M"), DELETE("D"); private LastEventType(String code) { this.code = code; } private String code; public String getCode() { return this.code; } public static LastEventType fromCode(String code) { if ("C".equals(code)) { return CREATE; } else if ("M".equals(code)) { return MODIFY; } else if ("D".equals(code)) { return DELETE; } else { return null; } } }; private String triggerId; private String routerId; private String relativeDir; private String fileName; private LastEventType lastEventType; private String channelId; private String reloadChannelId; private long crc32Checksum; private long oldCrc32Checksum; private long fileSize; private long fileModifiedTime; private Date createTime = new Date(); private String lastUpdateBy; private Date lastUpdateTime; public FileSnapshot() { } public FileSnapshot(FileSnapshot copy) { this.triggerId = copy.triggerId; this.routerId = copy.routerId; this.relativeDir = copy.relativeDir; this.fileName = copy.fileName; this.lastEventType = copy.lastEventType; this.crc32Checksum = copy.crc32Checksum; this.fileSize = copy.fileSize; this.fileModifiedTime = copy.fileModifiedTime; this.createTime = copy.createTime; this.lastUpdateBy = copy.lastUpdateBy; this.lastUpdateTime = copy.lastUpdateTime; this.channelId = copy.channelId; this.reloadChannelId = copy.getReloadChannelId(); } public FileSnapshot(FileTriggerRouter fileTriggerRouter, File file, LastEventType lastEventType) { boolean isDelete = lastEventType == LastEventType.DELETE; this.triggerId = fileTriggerRouter.getFileTrigger().getTriggerId(); this.channelId = fileTriggerRouter.getFileTrigger().getChannelId(); this.reloadChannelId = fileTriggerRouter.getFileTrigger().getReloadChannelId(); this.routerId = fileTriggerRouter.getRouter().getRouterId(); this.lastEventType = lastEventType; this.lastUpdateTime = new Date(); this.fileName = file.getName(); this.relativeDir = file.getPath().replace('\\', '/'); String baseDir = fileTriggerRouter.getFileTrigger().getBaseDir().replace('\\', '/'); if (this.relativeDir.startsWith(baseDir)) { this.relativeDir = this.relativeDir.substring(baseDir.length()); } if (this.relativeDir.endsWith(fileName)) { this.relativeDir = this.relativeDir.substring(0, this.relativeDir.lastIndexOf(fileName)); } if (this.relativeDir.startsWith("/")) { this.relativeDir = this.relativeDir.substring(1); } if (this.relativeDir.endsWith("/")) { this.relativeDir = this.relativeDir.substring(0, this.relativeDir.length() - 1); } if (StringUtils.isBlank(relativeDir)) { this.relativeDir = "."; } this.fileSize = isDelete ? 0 : file.length(); this.fileModifiedTime = isDelete ? 0 : file.lastModified(); if (file.isFile() && !isDelete) { try { this.crc32Checksum = FileUtils.checksumCRC32(file); } catch (FileNotFoundException ex) { this.lastEventType = LastEventType.DELETE; this.fileSize = 0; this.fileModifiedTime = 0; } catch (IOException ex) { throw new IoException(ex); } } else { this.crc32Checksum = -1; } } public String getTriggerId() { return triggerId; } public void setTriggerId(String triggerId) { this.triggerId = triggerId; } public String getRouterId() { return routerId; } public void setRouterId(String routerId) { this.routerId = routerId; } public void setChannelId(String channelId) { this.channelId = channelId; } public String getChannelId() { return channelId; } public void setReloadChannelId(String reloadChannelId) { this.reloadChannelId = reloadChannelId; } public String getReloadChannelId() { return reloadChannelId; } public String getRelativeDir() { return relativeDir; } public void setRelativeDir(String relativeDir) { this.relativeDir = relativeDir; } public String getFileName() { return fileName; } public void setFileName(String fileName) { this.fileName = fileName; } public LastEventType getLastEventType() { return lastEventType; } public void setLastEventType(LastEventType lastEventType) { this.lastEventType = lastEventType; if (lastEventType == LastEventType.DELETE) { this.fileModifiedTime = 0; this.fileSize = 0; } } public long getCrc32Checksum() { return crc32Checksum; } public void setCrc32Checksum(long crc32Checksum) { this.crc32Checksum = crc32Checksum; } public long getOldCrc32Checksum() { return oldCrc32Checksum; } public void setOldCrc32Checksum(long oldCrc32Checksum) { this.oldCrc32Checksum = oldCrc32Checksum; } public long getFileSize() { return fileSize; } public void setFileSize(long fileSize) { this.fileSize = fileSize; } public long getFileModifiedTime() { return fileModifiedTime; } public void setFileModifiedTime(long fileModifiedTime) { this.fileModifiedTime = fileModifiedTime; } public Date getCreateTime() { return createTime; } public void setCreateTime(Date createTime) { this.createTime = createTime; } public String getLastUpdateBy() { return lastUpdateBy; } public void setLastUpdateBy(String lastUpdateBy) { this.lastUpdateBy = lastUpdateBy; } public Date getLastUpdateTime() { return lastUpdateTime; } public void setLastUpdateTime(Date lastUpdateTime) { this.lastUpdateTime = lastUpdateTime; } public boolean sameFile(FileSnapshot file) { return StringUtils.equals(fileName, file.fileName) && StringUtils.equals(relativeDir, file.relativeDir); } @Override public int hashCode() { final int prime = 31; int result = 1; result = prime * result + (int) (crc32Checksum ^ (crc32Checksum >>> 32)); result = prime * result + (int) (fileModifiedTime ^ (fileModifiedTime >>> 32)); result = prime * result + ((fileName == null) ? 0 : fileName.hashCode()); result = prime * result + ((relativeDir == null) ? 0 : relativeDir.hashCode()); result = prime * result + (int) (fileSize ^ (fileSize >>> 32)); result = prime * result + ((lastEventType == null) ? 0 : lastEventType.hashCode()); result = prime * result + ((triggerId == null) ? 0 : triggerId.hashCode()); result = prime * result + ((routerId == null) ? 0 : routerId.hashCode()); return result; } @Override public boolean equals(Object obj) { if (this == obj) return true; if (obj == null) return false; if (getClass() != obj.getClass()) return false; FileSnapshot other = (FileSnapshot) obj; if (crc32Checksum != other.crc32Checksum) return false; if (fileModifiedTime != other.fileModifiedTime) { return false; } if (fileName == null) { if (other.fileName != null) return false; } else if (!fileName.equals(other.fileName)) return false; if (relativeDir == null) { if (other.relativeDir != null) return false; } else if (!relativeDir.equals(other.relativeDir)) return false; if (fileSize != other.fileSize) return false; if (lastEventType != other.lastEventType) return false; if (triggerId == null) { if (other.triggerId != null) return false; } else if (!triggerId.equals(other.triggerId)) return false; if (routerId == null) { if (other.routerId != null) return false; } else if (!routerId.equals(other.routerId)) return false; return true; } }