/**
* Copyright (C) 2008 - 2014 52°North Initiative for Geospatial Open Source
* Software GmbH
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 as published
* by the Free Software Foundation.
*
* If the program is linked with libraries which are licensed under one of
* the following licenses, the combination of the program with the linked
* library is not considered a "derivative work" of the program:
*
* - Apache License, version 2.0
* - Apache Software License, version 1.0
* - GNU Lesser General Public License, version 3
* - Mozilla Public License, versions 1.0, 1.1 and 2.0
* - Common Development and Distribution License (CDDL), version 1.0
*
* Therefore the distribution of the program linked with libraries licensed
* under the aforementioned licenses, is permitted by the copyright holders
* if the distribution is compliant with both the GNU General Public
* icense version 2 and the aforementioned licenses.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
* Public License for more details.
*/
/**
* Part of the diploma thesis of Thomas Everding.
* @author Thomas Everding
*/
package org.n52.ses.eml.v002.pattern;
import org.n52.ses.eml.v002.Constants;
import org.n52.ses.eml.v002.filterlogic.EMLParser;
/**
* representation of a timer pattern
*
* @author Thomas Everding
*
*/
public class PatternTimer extends AViewPattern{
/**
* <code>true</code> for interval patterns
*/
private boolean interval;
/**
* interval in ms
*/
private long duration = -1;
private int second = -1;
private int minute = -1;
private int hour = -1;
private int dayOfWeek = -1;
private int dayOfMonth = -1;
private int month = -1;
/**
* @return the interval boolean (<code>true</code> for interval)
*/
public boolean isInterval() {
return this.interval;
}
/**
* sets the interval boolean (<code>true</code> for interval)
*
* @param interval the interval to set
*/
public void setInterval(boolean interval) {
this.interval = interval;
}
/**
* @return the duration in ms
*/
public long getDuration() {
return this.duration;
}
/**
* @param duration the duration to set in ms
*/
public void setDuration(long duration) {
this.duration = duration;
}
/**
* @return the second
*/
public int getSecond() {
return this.second;
}
/**
* @param second the second to set
*/
public void setSecond(int second) {
this.second = second;
}
/**
* @return the minute
*/
public int getMinute() {
return this.minute;
}
/**
* @param minute the minute to set
*/
public void setMinute(int minute) {
this.minute = minute;
}
/**
* @return the hour
*/
public int getHour() {
return this.hour;
}
/**
* @param hour the hour to set
*/
public void setHour(int hour) {
this.hour = hour;
}
/**
* @return the dayOfWeek (1 = Monday, 7 = Sunday)
*/
public int getDayOfWeek() {
return this.dayOfWeek;
}
/**
* @param dayOfWeek the dayOfWeek to set (1 = Monday, 7 = Sunday)
*/
public void setDayOfWeek(int dayOfWeek) {
this.dayOfWeek = dayOfWeek;
}
/**
* @return the dayOfMonth
*/
public int getDayOfMonth() {
return this.dayOfMonth;
}
/**
* @param dayOfMonth the dayOfMonth to set
*/
public void setDayOfMonth(int dayOfMonth) {
this.dayOfMonth = dayOfMonth;
}
/**
* @return the month
*/
public int getMonth() {
return this.month;
}
/**
* @param month the month to set
*/
public void setMonth(int month) {
this.month = month;
}
@Override
public Statement[] createEsperStatements() {
Statement[] statements = new Statement[this.selectFunctions.size()];
/*
* build clauses
*/
SelFunction sel;
Statement stat;
String selectClause;
String fromClause;
String viewString;
//build from clause
fromClause = this.buildFromClause();
for (int i = 0; i < statements.length; i++) {
//build select clauses
sel = this.selectFunctions.get(i);
selectClause = this.buildSelectClause(sel);
//build view
viewString = this.view.getViewString();
//build statement
stat = new Statement();
stat.setSelectFunction(sel);
stat.setStatement(selectClause + " " + fromClause + viewString);
stat.setView(this.view);
//add the new statement to the result list
statements[i] = stat;
}
return statements;
}
@Override
public Statement[] createEsperStatements(EMLParser parser) {
return createEsperStatements();
}
/**
*
* @return the from clause for this pattern
*/
private String buildFromClause() {
//timers are patterns in esper EPL
String result = Constants.EPL_FROM
+ " "
+ Constants.EPL_PATTERN
+ " [every (";
if (this.interval) {
//interval timer
result += this.buildIntervalString();
}
else {
//at timer
result += this.buildAtString();
}
//close brackets
result += ")]";
return result;
}
/**
*
* @return the string for an at timer
*/
private String buildAtString() {
String result = Constants.TIMER_AT + "(";
/*
* timer:at syntax:
*
* timer:at(<minute>, <hour>, <day of month>, <month>, <day of week>, <second>)
*/
//add minute
if (this.minute == -1) {
//minute not set
result += "*";
}
else {
result += this.minute;
}
result += ", ";
//add hour
if (this.hour == -1) {
//hour not set
result += "*";
}
else {
result += this.hour;
}
result += ", ";
//add day of month
if (this.dayOfMonth == -1) {
//day of month not set
result += "*";
}
else {
result += this.dayOfMonth;
}
result += ", ";
//add month
if (this.month == -1) {
//month not set
result += "*";
}
else {
result += this.month;
}
result += ", ";
//add day of week
if (this.dayOfWeek == -1) {
//day of week not set
result += "*";
}
else {
/*
* convert day of week from EML to esper EPL
*
* EML: Sunday = 7
* EPL: Sunday = 0
*/
result += (this.dayOfWeek % 7);
}
//add second
if (this.second == -1) {
//second not set, optional in esper EPL
result += ")";
}
else {
result += ", " + this.second + ")";
}
return result;
}
/**
*
* @return the string for an interval timer
*/
private String buildIntervalString() {
//build string
String result = Constants.TIMER_INTERVAL
+ "("
+ this.duration
+ " msec)";
return result;
}
/**
*
* @param selFunction the select function object
* @return the select clause for the given function
*/
private String buildSelectClause(SelFunction selFunction) {
String result = Constants.EPL_SELECT + " ";
if (selFunction.getFunctionName().equals(Constants.FUNC_SELECT_EVENT_NAME)) {
result += "\"" + Constants.TIMER_EVENT_VALUE + "\" as value";
}
else {
result += selFunction.getSelectString(false);
}
return result;
}
}