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Java JDBC 4.2 (JRE 8+) driver for YugaByte SQL database
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/*
* Copyright (c) 2016, PostgreSQL Global Development Group
* See the LICENSE file in the project root for more information.
*/
package org.postgresql.jdbc;
import org.postgresql.util.CanEstimateSize;
import org.checkerframework.checker.nullness.qual.Nullable;
/**
* This is an internal class to hold field metadata info like table name, column name, etc.
* This class is not meant to be used outside of pgjdbc.
*/
public class FieldMetadata implements CanEstimateSize {
public static class Key {
final int tableOid;
final int positionInTable;
Key(int tableOid, int positionInTable) {
this.positionInTable = positionInTable;
this.tableOid = tableOid;
}
@Override
public boolean equals(@Nullable Object o) {
if (this == o) {
return true;
}
if (o == null || getClass() != o.getClass()) {
return false;
}
Key key = (Key) o;
if (tableOid != key.tableOid) {
return false;
}
return positionInTable == key.positionInTable;
}
@Override
public int hashCode() {
int result = tableOid;
result = 31 * result + positionInTable;
return result;
}
@Override
public String toString() {
return "Key{"
+ "tableOid=" + tableOid
+ ", positionInTable=" + positionInTable
+ '}';
}
}
final String columnName;
final String tableName;
final String schemaName;
final int nullable;
final boolean autoIncrement;
public FieldMetadata(String columnName) {
this(columnName, "", "", PgResultSetMetaData.columnNullableUnknown, false);
}
FieldMetadata(String columnName, String tableName, String schemaName, int nullable,
boolean autoIncrement) {
this.columnName = columnName;
this.tableName = tableName;
this.schemaName = schemaName;
this.nullable = nullable;
this.autoIncrement = autoIncrement;
}
@Override
public long getSize() {
return columnName.length() * 2
+ tableName.length() * 2
+ schemaName.length() * 2
+ 4L
+ 1L;
}
@Override
public String toString() {
return "FieldMetadata{"
+ "columnName='" + columnName + '\''
+ ", tableName='" + tableName + '\''
+ ", schemaName='" + schemaName + '\''
+ ", nullable=" + nullable
+ ", autoIncrement=" + autoIncrement
+ '}';
}
}
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