Java tutorial
/** * Copyright 2017 Goldman Sachs. * 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.gs.obevo.dbmetadata.impl; import com.gs.obevo.dbmetadata.api.DaColumnReference; import com.gs.obevo.dbmetadata.api.DaForeignKey; import org.apache.commons.lang3.Validate; import org.apache.commons.lang3.builder.ToStringBuilder; import org.apache.commons.lang3.builder.ToStringStyle; import org.eclipse.collections.api.block.function.Function; import org.eclipse.collections.api.list.ImmutableList; import org.eclipse.collections.impl.list.mutable.ListAdapter; import schemacrawler.schema.ForeignKey; import schemacrawler.schema.ForeignKeyColumnReference; public class DaForeignKeyImpl implements DaForeignKey { private final ForeignKey fk; private final SchemaStrategy schemaStrategy; public DaForeignKeyImpl(ForeignKey fk, SchemaStrategy schemaStrategy) { this.fk = Validate.notNull(fk); this.schemaStrategy = Validate.notNull(schemaStrategy); } @Override public String getName() { return fk.getName(); } @Override public ImmutableList<DaColumnReference> getColumnReferences() { return ListAdapter.adapt(fk.getColumnReferences()) .collect(new Function<ForeignKeyColumnReference, DaColumnReference>() { @Override public DaColumnReference valueOf(ForeignKeyColumnReference fk) { return new DaColumnReferenceImpl(fk, schemaStrategy); } }).toImmutable(); } @Override public boolean equals(Object o) { if (this == o) { return true; } if (!(o instanceof DaForeignKeyImpl)) { return false; } DaForeignKeyImpl that = (DaForeignKeyImpl) o; return fk.equals(that.fk); } @Override public int hashCode() { return fk.hashCode(); } @Override public String toString() { return new ToStringBuilder(this, ToStringStyle.SHORT_PREFIX_STYLE).append("fk", fk).toString(); } }