nl.topicus.jdbc.statement.SingleRowWhereClauseValidator Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of spanner-jdbc Show documentation

JDBC Driver for Google Cloud Spanner

The newest version!

package nl.topicus.jdbc.statement;

import java.util.HashMap;
import java.util.Map;
import nl.topicus.jdbc.MetaDataStore.TableKeyMetaData;

public class SingleRowWhereClauseValidator {
  private final TableKeyMetaData table;

  private Map keyValues = new HashMap<>();

  private Map keyValuesSet = new HashMap<>();

  private String currentColumn = null;

  public SingleRowWhereClauseValidator(TableKeyMetaData table) {
    this.table = table;
  }

  public void set(String column) {
    currentColumn = column.toUpperCase();
  }

  public void to(Object value) {
    if (currentColumn == null)
      throw new IllegalArgumentException("No column set");
    keyValues.put(currentColumn, value);
    keyValuesSet.put(currentColumn, Boolean.TRUE);
    currentColumn = null;
  }

  public boolean isValid() {
    for (String key : table.getKeyColumns()) {
      Boolean set = keyValuesSet.get(key);
      if (set == null || !set.booleanValue()) {
        return false;
      }
    }
    return true;
  }

}