com.reinaldoarrosi.android.querybuilder.sqlite.projection.AliasedProjection Maven / Gradle / Ivy

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Fluent Android library to build SQLite select statements

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package com.reinaldoarrosi.android.querybuilder.sqlite.projection;

import java.util.List;

import com.reinaldoarrosi.android.querybuilder.Utils;

public class AliasedProjection extends Projection {
	private Projection projection;
	private String alias;
	
	public AliasedProjection(Projection projection, String alias) {
		this.projection = projection;
		this.alias = alias;
	}
	
	@Override
	public Projection as(String alias) {
		this.alias = alias;
		return this;
	}
	
	@Override
	public Projection castAsDate() {
		if(projection != null)
			projection = projection.castAsDate();
		
		return this;
	}
	
	@Override
	public Projection castAsDateTime() {
		if(projection != null)
			projection = projection.castAsDateTime();
		
		return this;
	}
	
	@Override
	public Projection castAsInt() {
		if(projection != null)
			projection = projection.castAsInt();
		
		return this;
	}
	
	@Override
	public Projection castAsReal() {
		if(projection != null)
			projection = projection.castAsReal();
		
		return this;
	}
	
	@Override
	public Projection castAsString() {
		if(projection != null)
			projection = projection.castAsString();
		
		return this;
	}
	
	public Projection removeAlias() {
		Projection p = projection;
		
		while(p instanceof AliasedProjection) {
			p = ((AliasedProjection)p).projection;
		}
		
		return p;
	}

	@Override
	public String build() {
		String ret = (projection != null ? projection.build() : "");
		return ret + " AS " + alias;
	}

	@Override
	public List