com.jeroensteenbeeke.hyperion.data.Expression.java Source code

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Here is the source code for com.jeroensteenbeeke.hyperion.data.Expression.java

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/**
 * Tysan Clan Website
 * Copyright (C) 2008-2013 Jeroen Steenbeeke and Ties van de Ven
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU 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 Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package com.jeroensteenbeeke.hyperion.data;

import java.io.Serializable;

import org.apache.wicket.model.IDetachable;
import org.apache.wicket.model.IModel;
import org.apache.wicket.model.Model;
import org.hibernate.Criteria;
import org.hibernate.criterion.Restrictions;

import com.jeroensteenbeeke.hyperion.reflection.Reflector;

/**
 * @author Jeroen Steenbeeke
 */
@Deprecated
public abstract class Expression<T extends Serializable> implements IDetachable {

    private static final long serialVersionUID = 1L;

    private IModel<T> model;

    @SuppressWarnings("unchecked")
    protected Expression(T object) {
        if (object instanceof DomainObject) {
            model = (IModel<T>) ModelMaker.wrap((DomainObject) object);
        } else {
            model = new Model<T>(object);
        }
    }

    protected Expression() {
        model = new Model<T>();
    }

    public IModel<T> getModel() {
        return model;
    }

    public T getValue() {
        return model.getObject();
    }

    @Override
    public void detach() {
        model.detach();

    }

    public static <T extends Comparable<T> & Serializable> Expression<T> lessThan(final String property, T value) {
        return new Expression<T>(value) {
            private static final long serialVersionUID = 1L;

            @Override
            public void decorateCriteria(Criteria criteria) {
                criteria.add(Restrictions.lt(property, getValue()));
            }

            @SuppressWarnings("unchecked")
            @Override
            public boolean retain(Object object) {
                T objectValue = (T) Reflector.invokeGetter(object, property);

                return objectValue.compareTo(getValue()) < 0;
            }

        };
    }

    public static <T extends Comparable<T> & Serializable> Expression<T> greaterThan(final String property,
            T value) {
        return new Expression<T>(value) {
            private static final long serialVersionUID = 1L;

            @Override
            public void decorateCriteria(Criteria criteria) {
                criteria.add(Restrictions.gt(property, getValue()));
            }

            @SuppressWarnings("unchecked")
            @Override
            public boolean retain(Object object) {
                T objectValue = (T) Reflector.invokeGetter(object, property);

                return objectValue.compareTo(getValue()) > 0;
            }
        };
    }

    public static <T extends Comparable<T> & Serializable> Expression<T> lessThanOrEquals(final String property,
            final T value) {
        return new Expression<T>() {
            private static final long serialVersionUID = 1L;

            @Override
            public void decorateCriteria(Criteria criteria) {
                criteria.add(Restrictions.le(property, value));
            }

            @SuppressWarnings("unchecked")
            @Override
            public boolean retain(Object object) {
                T objectValue = (T) Reflector.invokeGetter(object, property);

                return objectValue.compareTo(value) <= 0;
            }
        };
    }

    public static <T extends Comparable<T> & Serializable> Expression<T> greaterThanOrEquals(final String property,
            T value) {
        return new Expression<T>() {
            private static final long serialVersionUID = 1L;

            @Override
            public void decorateCriteria(Criteria criteria) {
                criteria.add(Restrictions.ge(property, getValue()));
            }

            @SuppressWarnings("unchecked")
            @Override
            public boolean retain(Object object) {
                T objectValue = (T) Reflector.invokeGetter(object, property);

                return objectValue.compareTo(getValue()) >= 0;
            }

        };
    }

    public abstract void decorateCriteria(Criteria criteria);

    public abstract boolean retain(Object object);

    public static Expression<?> simpleSearchString(final String property, final String searchString) {
        return new Expression<String>() {
            private static final long serialVersionUID = 1L;

            private String criteriaFilter(String input) {
                StringBuilder filtered = new StringBuilder();

                for (char n : input.toCharArray()) {
                    if (Character.isWhitespace(n) || Character.isLetterOrDigit(n)) {
                        filtered.append(n);
                    } else if (n == '?') {
                        filtered.append('_');
                    } else if (n == '*') {
                        filtered.append('%');
                    }
                }

                return filtered.toString();
            }

            private String retainFilter(String input) {
                StringBuilder filtered = new StringBuilder();

                for (char n : input.toCharArray()) {
                    if (Character.isWhitespace(n) || Character.isLetterOrDigit(n)) {
                        filtered.append(n);
                    } else if (n == '?') {
                        filtered.append('.');
                    } else if (n == '*') {
                        filtered.append(".*");
                    }
                }

                return filtered.toString();
            }

            @Override
            public void decorateCriteria(Criteria criteria) {
                criteria.add(Restrictions.ilike(property, criteriaFilter(searchString)));
            }

            @Override
            public boolean retain(Object object) {
                String objectValue = Reflector.invokeGetter(object, property);

                return objectValue.matches(retainFilter(searchString));
            }

        };
    }
}