io.yawp.repository.FieldModel Maven / Gradle / Ivy

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YAWP! core
There is a newer version: 2.08alpha
package io.yawp.repository;

import io.yawp.repository.annotations.Id;
import io.yawp.repository.annotations.Index;
import io.yawp.repository.annotations.Json;

import java.lang.reflect.Field;
import java.util.Collection;
import java.util.Date;

public class FieldModel {

	private Field field;

	public FieldModel(Field field) {
		this.field = field;
		field.setAccessible(true);
	}

	public Field getField() {
		return field;
	}

	public String getName() {
		return field.getName();
	}

	public Object getValue(Object object) {
		try {
			return field.get(object);
		} catch (IllegalArgumentException | IllegalAccessException e) {
			throw new RuntimeException(e);
		}
	}

	public boolean isId() {
		return field.isAnnotationPresent(Id.class);
	}

	public boolean hasIndex() {
		return field.getAnnotation(Index.class) != null;
	}

	public boolean isIndexNormalizable() {
		if (!hasIndex()) {
			throw new RuntimeException("You must add @Index annotation the the field '" + field.getName()
					+ "' if you want to use it as a index in where statements.");
		}
		return getIndex().normalize() && isString();
	}

	public boolean isEnum(Object value) {
		return value != null && value.getClass().isEnum();
	}

	public boolean isCollection(Object value) {
		return Collection.class.isInstance(value);
	}

	public boolean isEnum() {
		return field.getType().isEnum();
	}

	public boolean isIdRef() {
		return IdRef.class.isAssignableFrom(field.getType());
	}

	public boolean isCollection() {
		return Collection.class.isAssignableFrom(field.getType());
	}

	public boolean isSaveAsJson() {
		return field.getAnnotation(Json.class) != null;
	}

	public boolean isSaveAsText() {
		return field.getAnnotation(io.yawp.repository.annotations.Text.class) != null;
	}

	private Index getIndex() {
		return field.getAnnotation(Index.class);
	}

	public boolean isNumber() {
		if (Number.class.isAssignableFrom(field.getType())) {
			return true;
		}
		String name = field.getType().getName();
		return name.equals("int") || name.equals("long") || name.equals("double");
	}

	public boolean isInt() {
		return Integer.class.isAssignableFrom(field.getType()) || field.getType().getName().equals("int");
	}

	public boolean isLong() {
		return Long.class.isAssignableFrom(field.getType()) || field.getType().getName().equals("long");
	}

	public boolean isDate() {
		return Date.class.isAssignableFrom(field.getType());
	}

	private boolean isString() {
		return String.class.isAssignableFrom(field.getType());
	}

}