com.greensopinion.finance.services.domain.Category.java Source code

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Here is the source code for com.greensopinion.finance.services.domain.Category.java

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/*******************************************************************************
 * Copyright (c) 2015, 2016 David Green.
 *
 * Licensed 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 com.greensopinion.finance.services.domain;

import static com.google.common.base.Preconditions.checkNotNull;

import java.util.List;

import com.google.common.base.MoreObjects;
import com.google.common.base.Strings;
import com.google.common.collect.ImmutableList;

public class Category {
    private final String name;
    private final List<MatchRule> matchRules;

    public Category(String name) {
        this(name, ImmutableList.of());
    }

    public Category(String name, List<MatchRule> matchRules) {
        this.name = checkNotNull(name);
        this.matchRules = ImmutableList.copyOf(checkNotNull(matchRules));
    }

    public String getName() {
        return name;
    }

    public List<MatchRule> getMatchRules() {
        return MoreObjects.firstNonNull(matchRules, ImmutableList.<MatchRule>of());
    }

    public boolean matches(Transaction transaction) {
        checkNotNull(transaction);
        if (!Strings.isNullOrEmpty(transaction.getCategoryName())) {
            return getName().equals(transaction.getCategoryName());
        }
        for (MatchRule matchRule : getMatchRules()) {
            if (matchRule.matches(transaction)) {
                return true;
            }
        }
        return false;
    }

    public Category withMatchRule(MatchRule rule) {
        checkNotNull(rule);
        ImmutableList.Builder<MatchRule> newRules = ImmutableList.builder();
        newRules.addAll(getMatchRules());
        newRules.add(rule);
        return new Category(name, newRules.build());
    }

    @Override
    public String toString() {
        return MoreObjects.toStringHelper(Category.class).add("name", name).toString();
    }
}