org.apache.karaf.main.lock.Statements Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of org.apache.karaf.main
This bundle is the main Karaf launcher. It's responsible of the Karaf startup including the console, branding, etc bootstrap.
There is a newer version: 4.4.6
Show newest version
/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.apache.karaf.main.lock;


public class Statements {
    
    protected String tablePrefix = "";
    protected String tableName = "KARAF_LOCK";
    protected String nodeName = "karaf";
    protected String momentColumnDataType = "BIGINT";
    protected String nodeColumnDataType = "VARCHAR(20)";
    
    private String[] lockCreateSchemaStatements;
    private String lockCreateStatement;
    private String lockUpdateStatement;
    private String lockVerifySelectionNotEmptyStatement;
    
    public String[] getLockCreateSchemaStatements(long moment) {
        if (lockCreateSchemaStatements == null) {
            lockCreateSchemaStatements = new String[] {
                "CREATE TABLE " + getFullLockTableName() + " (MOMENT " + getMomentColumnDataType() + ", NODE " + getNodeColumnDataType() + ")",
                "INSERT INTO " + getFullLockTableName() + " (MOMENT, NODE) VALUES (" + moment + ", '" + getNodeName() + "')", 
            };
        }
        return lockCreateSchemaStatements;
    }
    
    public void setLockCreateSchemaStatements(String[] lockCreateSchemaStatements) {
        this.lockCreateSchemaStatements = lockCreateSchemaStatements;
    }
    
    public String getLockCreateStatement() {
        if (lockCreateStatement == null) {
            lockCreateStatement = "SELECT * FROM " + getFullLockTableName() + " FOR UPDATE";
        }
        return lockCreateStatement;
    }
    
    public void setLockCreateStatement(String lockCreateStatement) {
        this.lockCreateStatement = lockCreateStatement;
    }
    
    public String getLockUpdateStatement(long moment) {
        if (lockUpdateStatement == null) {
            lockUpdateStatement = "UPDATE " + getFullLockTableName() + " SET MOMENT = " + moment;
        }
        return lockUpdateStatement;
    }
    
    public void setLockUpdateStatement(String lockUpdateStatement) {
        this.lockUpdateStatement = lockUpdateStatement;
    }

	public void setLockVerifySelectionNotEmptyStatement(String lockVerifySelectionNotEmptyStatement) {
		this.lockVerifySelectionNotEmptyStatement = lockVerifySelectionNotEmptyStatement;
	}

	public String getLockVerifySelectionNotEmptyStatement() {
		if (lockVerifySelectionNotEmptyStatement == null) {
			 //The lock create and lock update are perfomed on the whole table instead of 
			 //the cluster. So not taking the node into account for now.
			lockVerifySelectionNotEmptyStatement = "SELECT COUNT(*) FROM " + getFullLockTableName();
		}
		return lockVerifySelectionNotEmptyStatement;
	}
    
    
    long getCurrentTimeMillis() {
        return System.currentTimeMillis();
    }

    public String getFullLockTableName() {
        return getTablePrefix() + getTableName();
    }
    
    public void setMomentColumnDataType(String momentColumnDataType) {
        this.momentColumnDataType = momentColumnDataType;
    }
    
    public String getMomentColumnDataType() {
        return momentColumnDataType;
    }

    public String getNodeName() {
        return nodeName;
    }

    public void setNodeName(String nodeName) {
        this.nodeName = nodeName;
    }

    public String getNodeColumnDataType() {
        return nodeColumnDataType;
    }

    public void setNodeColumnDataType(String nodeColumnDataType) {
        this.nodeColumnDataType = nodeColumnDataType;
    }

    public String getTablePrefix() {
        return tablePrefix;
    }

    public void setTablePrefix(String tablePrefix) {
        this.tablePrefix = tablePrefix;
    }
    
    public String getTableName() {
        return tableName;
    }

    public void setTableName(String tableName) {
        this.tableName = tableName;
    }
}