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ParamKey.java
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108 lines (91 loc) · 2.3 KB
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package act.inject.param;
/*-
* #%L
* ACT Framework
* %%
* Copyright (C) 2014 - 2017 ActFramework
* %%
* 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.
* #L%
*/
import org.osgl.$;
import org.osgl.util.E;
import org.rythmengine.utils.S;
import java.util.Arrays;
/**
* `ParamKey` is composed of a sequenced of String
*/
class ParamKey {
private String[] seq;
private int hc;
private int size;
private ParamKey(String[] seq) {
this.seq = seq;
this.size = seq.length;
calcHashCode();
}
private ParamKey(String one) {
this.seq = new String[]{one};
this.size = 1;
calcHashCode();
}
@Override
public boolean equals(Object obj) {
if (obj == this) {
return true;
}
return obj instanceof ParamKey && Arrays.equals(((ParamKey) obj).seq, seq);
}
@Override
public int hashCode() {
return hc;
}
@Override
public String toString() {
return S.join(".", seq);
}
String[] seq() {
return seq;
}
int size() {
return size;
}
boolean isSimple() {
return size == 1;
}
String name() {
return seq[size - 1];
}
ParamKey parent() {
if (1 == size) {
return null;
}
String[] sa = new String[size - 1];
System.arraycopy(seq, 0, sa, 0, size - 1);
return ParamKey.of(sa);
}
ParamKey child(String name) {
String[] sa = $.concat(seq, name);
return ParamKey.of(sa);
}
private void calcHashCode() {
this.hc = $.hc(seq);
}
static ParamKey of(String[] seq) {
E.illegalArgumentIf(seq.length == 0);
return new ParamKey(seq);
}
static ParamKey of(String one) {
return new ParamKey(one);
}
}