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.DaColumn; import com.gs.obevo.dbmetadata.api.DaColumnReference; import org.apache.commons.lang3.Validate; import org.apache.commons.lang3.builder.ToStringBuilder; import org.apache.commons.lang3.builder.ToStringStyle; import schemacrawler.schema.ForeignKeyColumnReference; public class DaColumnReferenceImpl implements DaColumnReference { private final ForeignKeyColumnReference fkColumnReference; private final SchemaStrategy schemaStrategy; public DaColumnReferenceImpl(ForeignKeyColumnReference fkColumnReference, SchemaStrategy schemaStrategy) { this.fkColumnReference = Validate.notNull(fkColumnReference); this.schemaStrategy = Validate.notNull(schemaStrategy); } @Override public DaColumn getForeignKeyColumn() { return new DaColumnImpl(fkColumnReference.getForeignKeyColumn(), schemaStrategy); } @Override public DaColumn getPrimaryKeyColumn() { return new DaColumnImpl(fkColumnReference.getPrimaryKeyColumn(), schemaStrategy); } @Override public boolean equals(Object o) { if (this == o) { return true; } if (!(o instanceof DaColumnReferenceImpl)) { return false; } DaColumnReferenceImpl that = (DaColumnReferenceImpl) o; return fkColumnReference.equals(that.fkColumnReference); } @Override public int hashCode() { return fkColumnReference.hashCode(); } @Override public String toString() { return new ToStringBuilder(this, ToStringStyle.SHORT_PREFIX_STYLE) .append("fkColumnReference", fkColumnReference).toString(); } }