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package com.salesforce.phoenix.compile;
import java.sql.ParameterMetaData;
import java.sql.SQLException;
import java.util.Collections;
import java.util.List;
import org.apache.hadoop.hbase.client.Scan;
import com.salesforce.phoenix.exception.SQLExceptionCode;
import com.salesforce.phoenix.exception.SQLExceptionInfo;
import com.salesforce.phoenix.execute.MutationState;
import com.salesforce.phoenix.expression.LiteralExpression;
import com.salesforce.phoenix.jdbc.PhoenixConnection;
import com.salesforce.phoenix.jdbc.PhoenixStatement;
import com.salesforce.phoenix.parse.CreateIndexStatement;
import com.salesforce.phoenix.parse.ParseNode;
import com.salesforce.phoenix.schema.MetaDataClient;
public class CreateIndexCompiler {
private final PhoenixStatement statement;
public CreateIndexCompiler(PhoenixStatement statement) {
this.statement = statement;
}
public MutationPlan compile(final CreateIndexStatement create) throws SQLException {
final PhoenixConnection connection = statement.getConnection();
final ColumnResolver resolver = FromCompiler.getResolver(create, connection);
Scan scan = new Scan();
final StatementContext context = new StatementContext(statement, resolver, statement.getParameters(), scan);
ExpressionCompiler expressionCompiler = new ExpressionCompiler(context);
List<ParseNode> splitNodes = create.getSplitNodes();
final byte[][] splits = new byte[splitNodes.size()][];
for (int i = 0; i < splits.length; i++) {
ParseNode node = splitNodes.get(i);
if (!node.isStateless()) {
throw new SQLExceptionInfo.Builder(SQLExceptionCode.SPLIT_POINT_NOT_CONSTANT)
.setMessage("Node: " + node).build().buildException();
}
LiteralExpression expression = (LiteralExpression)node.accept(expressionCompiler);
splits[i] = expression.getBytes();
}
final MetaDataClient client = new MetaDataClient(connection);
return new MutationPlan() {
@Override
public ParameterMetaData getParameterMetaData() {
return context.getBindManager().getParameterMetaData();
}
@Override
public PhoenixConnection getConnection() {
return connection;
}
@Override
public MutationState execute() throws SQLException {
return client.createIndex(create, splits);
}
@Override
public ExplainPlan getExplainPlan() throws SQLException {
return new ExplainPlan(Collections.singletonList("CREATE INDEX"));
}
};
}
}