com.github.ferstl.depgraph.graph.style.StyleKey.java Source code

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Here is the source code for com.github.ferstl.depgraph.graph.style.StyleKey.java

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/*
 * Copyright (c) 2014 - 2016 by Stefan Ferstl <st.ferstl@gmail.com>
 *
 * 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.github.ferstl.depgraph.graph.style;

import java.util.Objects;
import org.apache.commons.lang3.StringUtils;
import com.google.common.base.Joiner;

public final class StyleKey {

    private static final int NUM_ELEMENTS = 5;

    String groupId;
    String artifactId;
    String scope;
    String type;
    String version;

    private StyleKey(String[] parts) {
        if (parts.length > NUM_ELEMENTS) {
            throw new IllegalArgumentException(
                    "Too many parts. Expecting '<groupId>:<artifactId>:<version>:<scope>:<type>'");
        }

        String[] expanded = new String[NUM_ELEMENTS];
        for (int i = 0; i < parts.length; i++) {
            expanded[i] = StringUtils.defaultIfEmpty(parts[i], null);
        }

        this.groupId = expanded[0];
        this.artifactId = expanded[1];
        this.scope = expanded[2];
        this.type = expanded[3];
        this.version = expanded[4];
    }

    public static StyleKey fromString(String keyString) {
        String[] parts = keyString.split(",");
        return new StyleKey(parts);
    }

    public static StyleKey create(String groupId, String artifactId, String scope, String type, String version) {
        return new StyleKey(new String[] { groupId, artifactId, scope, type, version });
    }

    public boolean matches(StyleKey other) {
        return (this.groupId == null || wildcardMatch(this.groupId, other.groupId))
                && (this.artifactId == null || wildcardMatch(this.artifactId, other.artifactId))
                && (this.scope == null || match(this.scope, other.scope))
                && (this.type == null || match(this.type, other.type))
                && (this.version == null || wildcardMatch(this.version, other.version));

    }

    @Override
    public boolean equals(Object obj) {
        if (obj == this) {
            return true;
        }

        if (!(obj instanceof StyleKey)) {
            return false;
        }

        StyleKey other = (StyleKey) obj;

        return Objects.equals(this.groupId, other.groupId) && Objects.equals(this.artifactId, other.artifactId)
                && Objects.equals(this.scope, other.scope) && Objects.equals(this.type, other.type)
                && Objects.equals(this.version, other.version);
    }

    @Override
    public int hashCode() {
        return Objects.hash(this.groupId, this.artifactId, this.scope, this.type, this.version);
    }

    @Override
    public String toString() {
        return Joiner.on(",").useForNull("").join(this.groupId, this.artifactId, this.scope, this.type,
                this.version);
    }

    private static boolean wildcardMatch(String value1, String value2) {
        if (StringUtils.endsWith(value1, "*")) {
            return StringUtils.startsWith(value2, value1.substring(0, value1.length() - 1));
        }

        return match(value1, value2);
    }

    private static boolean match(String value1, String value2) {
        return StringUtils.equals(value1, value2);
    }

}