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com.xdev.jadoth.criteria.Criteria Maven / Gradle / Ivy

package com.xdev.jadoth.criteria;

/*-
 * #%L
 * XDEV Application Framework
 * %%
 * Copyright (C) 2003 - 2020 XDEV Software
 * %%
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 * 
 * 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 Lesser Public License for more details.
 * 
 * You should have received a copy of the GNU General Lesser Public
 * License along with this program.  If not, see
 * .
 * #L%
 */
/**
 * 
 */

/**
 * @author Thomas Muenz
 *
 */
public abstract class Criteria implements Criterion
{
	///////////////////////////////////////////////////////////////////////////
	// instance fields //
	////////////////////
	
	private final Criterion[] criteria;

	
	
	///////////////////////////////////////////////////////////////////////////
	// constructors //
	/////////////////
	
	public Criteria(final Criterion... criteria)
	{
		super();
		this.criteria = criteria;
	}

	
	
	///////////////////////////////////////////////////////////////////////////
	// getters          //
	/////////////////////
	
	/**
	 * @return the criteria
	 */
	public Criterion[] getCriteria()
	{
		return this.criteria;
	}	

	
	
	
	
	//Below here are just String representation methods that don't influence actual logic	
	
	protected abstract StringBuilder assembleOperator(StringBuilder sb);
	
	protected StringBuilder assemble(final StringBuilder sb)
	{
		sb.append('(');
		boolean notEmtpy = false;
		for(final Criterion c : this.criteria) {
			if(notEmtpy){
				this.assembleOperator(sb);
			}
			else {
				notEmtpy = true;
			}
			sb.append(c);
		}
		sb.append(')');
		return sb;
	}
	
	/**
	 * @return
	 * @see java.lang.Object#toString()
	 */
	@Override
	public String toString()
	{
		return this.assemble(new StringBuilder(1024)).toString();
	}
	
}




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