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HotRod is an ORM for Java, Spring and SpringBoot.

There is a newer version: 4.8.1

package org.hotrod.runtime.livesql.metadata;

import java.util.ArrayList;
import java.util.List;

import org.hotrod.runtime.livesql.dialects.LiveSQLDialect;
import org.hotrod.runtime.livesql.queries.select.AbstractSelectObject.AliasGenerator;
import org.hotrod.runtime.livesql.queries.select.AbstractSelectObject.TableReferences;
import org.hotrod.runtime.livesql.queries.select.QueryWriter;
import org.hotrod.runtime.livesql.queries.select.TableExpression;
import org.hotrodorm.hotrod.utils.SUtil;

public abstract class TableOrView extends DatabaseObject implements TableExpression {

  private String alias;
  private String designatedAlias;
  protected List columns;

  TableOrView(final String catalog, final String schema, final String name, final String type, final String alias) {
    super(catalog, schema, name, type);
    this.alias = alias;
    this.designatedAlias = null;
    this.columns = new ArrayList<>();
  }

  public final String getAlias() {
    return this.alias != null ? this.alias : this.designatedAlias;
  }

  public String renderTree() {
    StringBuilder sb = new StringBuilder();
    this.renderTree(sb, 0);
    return sb.toString();
  }

  public void renderTree(final StringBuilder sb, final int level) {
    sb.append(SUtil.getFiller(". ", level) + "+ [table-or-view] " + this.getClass().getName() + "\n");
  }

  // Validation

  @Override
  public void validateTableReferences(final TableReferences tableReferences, final AliasGenerator ag) {
    if (this.alias == null) {
      this.designatedAlias = ag.next();
    }
    tableReferences.register(this.alias, this);
  }

  // Rendering

  @Override
  public void renderTo(QueryWriter w) {
    LiveSQLDialect dialect = w.getSQLDialect();
    String alias = this.getAlias() == null ? null
        : dialect.canonicalToNatural(dialect.naturalToCanonical(this.getAlias()));
    w.write(dialect.canonicalToNatural(this) + (alias != null ? (" " + alias) : ""));
  }

  // --- Indexable methods (hashCode & equals) ---
  // DO NOT implement these methods, since the code relies on the default
  // [shallow] JVM implementation.
  // ---------------------------------------------

}