* amortized) constant time operations. Expected in the hashtable sense (depends on the hash
 * function doing a good job of distributing the elements to the buckets to a distribution not far
 * from uniform), and amortized since some operations can trigger a hash table resize.
 *
 * <p>As compared with {@link java.util.LinkedHashMap}, this structure places significantly reduced

        this.id = id;
        this.transitive = transitive;
    }

    /**
     * The {@code id} uniquely represents a value for this extensible enum.
     * This id should be used to compute the equality and hash code for the instance.
     *
     * @return the id
     */
    @Nonnull
    public String id() {
        return id;
    }

    public boolean isTransitive() {
        return transitive;

                && Objects.equals(methodName, that.methodName)
                && Objects.equals(descriptor, that.descriptor);
        }

        @Override
        public int hashCode() {
            return Objects.hash(containingType, methodName, descriptor);
        }
    }

            return Objects.equals(factory.getName(), that.factory.getName());
        }

        @Override
        public int hashCode() {
            return Objects.hash(factory.getName());
        }
    }

    private static class DefaultChecksumCalculator implements ChecksumCalculator {
        private final org.eclipse.aether.spi.connector.checksum.ChecksumAlgorithm algorithm;

@Singleton
public class DefaultProfileInjector implements ProfileInjector {

    private static final Map<Model, Map<List<Profile>, Model>> CACHE = Collections.synchronizedMap(new WeakHashMap<>());

    // In order for the weak hash map to work correctly, we must not hold any reference to
    // the model used as the key.  So we use a dummy model as a placeholder to indicate that
    // we want to store the model used as they key.

        private final String tag;

        private final int hash;

        GavCacheKey(String groupId, String artifactId, String version, String tag) {
            this(gav(groupId, artifactId, version), tag);
        }

        GavCacheKey(String gav, String tag) {
            this.gav = gav;
            this.tag = tag;
            this.hash = Objects.hash(gav, tag);
        }

import org.codelibs.core.misc.Base64Util;

/**
 * {@link String}用の変換ユーティリティです。
 *
 * @author higa
 */
public abstract class StringConversionUtil {

    /** WAVE DASH */
    public static final char WAVE_DASH = '\u301C';

    /** FULLWIDTH TILDE */
    public static final char FULLWIDTH_TILDE = '\uFF5E';

    /** DOUBLE VERTICAL LINE */
    public static final char DOUBLE_VERTICAL_LINE = '\u2016';

                && Objects.equals(this.getVersion(), that.getVersion())
                && Objects.equals(this.getClassifier(), that.getClassifier());
    }

    @Override
    public int hashCode() {
        return Objects.hash(getGroupId(), getArtifactId(), getVersion(), getClassifier());
    }

    @Override
    public String toString() {
        return coordinate.toString();
    }

        private final int hashCode;

        GAKey(String groupId, String artifactId) {
            this.groupId = groupId;
            this.artifactId = artifactId;
            this.hashCode = Objects.hash(groupId, artifactId);
        }

        @Override
        public int hashCode() {
            return hashCode;
        }

        @Override
        public boolean equals(Object obj) {

        GAKey(String groupId, String artifactId) {
            this.groupId = (groupId != null) ? groupId : "";
            this.artifactId = (artifactId != null) ? artifactId : "";

            hashCode = Objects.hash(this.groupId, this.artifactId);
        }

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