Java tutorial
/* * * Copyright 2015 Andrey Yakovlev * * 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 jodtemplate.template.expression; import java.util.ArrayList; import java.util.Collections; import java.util.List; import org.apache.commons.lang3.builder.EqualsBuilder; import org.apache.commons.lang3.builder.HashCodeBuilder; public class VariableExpression { private final String variable; private final List<String> params; private final String defaultValue; public VariableExpression(final String variable, final List<String> params, final String defaultValue) { this.variable = variable; this.params = new ArrayList<>(params); this.defaultValue = defaultValue; } public String getVariable() { return variable; } public List<String> getParams() { return Collections.unmodifiableList(new ArrayList<>(params)); } public String getDefaultValue() { return defaultValue; } @Override public int hashCode() { return new HashCodeBuilder().append(variable).append(params).append(defaultValue).toHashCode(); } @Override public boolean equals(final Object obj) { if (obj == null) { return false; } if (obj == this) { return true; } if (obj.getClass() != getClass()) { return false; } final VariableExpression rhs = (VariableExpression) obj; return new EqualsBuilder().append(variable, rhs.variable).append(params, rhs.params) .append(defaultValue, rhs.defaultValue).isEquals(); } }