| package net.onrc.onos.core.util; |
| |
| import java.math.BigInteger; |
| |
| import net.onrc.onos.core.util.serializers.FlowEntryIdDeserializer; |
| import net.onrc.onos.core.util.serializers.FlowEntryIdSerializer; |
| |
| import org.codehaus.jackson.annotate.JsonIgnore; |
| import org.codehaus.jackson.map.annotate.JsonDeserialize; |
| import org.codehaus.jackson.map.annotate.JsonSerialize; |
| |
| /** |
| * The class representing a Flow Entry ID. |
| * This class is immutable. |
| */ |
| @JsonDeserialize(using = FlowEntryIdDeserializer.class) |
| @JsonSerialize(using = FlowEntryIdSerializer.class) |
| public final class FlowEntryId { |
| private static final long INVALID = -1; |
| private final long value; |
| |
| /** |
| * Default constructor. |
| */ |
| public FlowEntryId() { |
| this.value = FlowEntryId.INVALID; |
| } |
| |
| /** |
| * Constructor from an integer value. |
| * |
| * @param value the value to use. |
| */ |
| public FlowEntryId(long value) { |
| this.value = value; |
| } |
| |
| /** |
| * Constructor from a string. |
| * |
| * @param value the value to use. |
| */ |
| public FlowEntryId(String value) { |
| // |
| // Use the help of BigInteger to parse strings representing |
| // large unsigned hex long values. |
| // |
| char c = 0; |
| if (value.length() > 2) { |
| c = value.charAt(1); |
| } |
| if ((c == 'x') || (c == 'X')) { |
| this.value = new BigInteger(value.substring(2), 16).longValue(); |
| } else { |
| this.value = Long.decode(value); |
| } |
| } |
| |
| /** |
| * Get the value of the Flow Entry ID. |
| * |
| * @return the value of the Flow Entry ID. |
| */ |
| public long value() { |
| return value; |
| } |
| |
| /** |
| * Test whether the Flow Entry ID is valid. |
| * |
| * @return true if the Flow Entry ID is valid, otherwise false. |
| */ |
| @JsonIgnore |
| public boolean isValid() { |
| return (this.value() != FlowEntryId.INVALID); |
| } |
| |
| /** |
| * Returns true of the object is another Flow Entry ID with |
| * the same value; otherwise, returns false. |
| * |
| * @param Object to compare |
| */ |
| @Override |
| public boolean equals(Object obj) { |
| if (obj != null && obj.getClass() == this.getClass()) { |
| FlowEntryId entry = (FlowEntryId) obj; |
| return this.value() == entry.value(); |
| } |
| return false; |
| } |
| |
| /** |
| * Return the hash code of the Flow Entry ID. |
| */ |
| @Override |
| public int hashCode() { |
| return Long.valueOf(value).hashCode(); |
| } |
| |
| /** |
| * Convert the Flow Entry ID value to a hexadecimal string. |
| * |
| * @return the Flow Entry ID value to a hexadecimal string. |
| */ |
| @Override |
| public String toString() { |
| return "0x" + Long.toHexString(this.value); |
| } |
| } |